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Populations, communities, and ecosystems | what came first the egg or chicken? | A circle has no beginning. |
Populations, communities, and ecosystems | how is all the population stick together | because they are the same species. |
Populations, communities, and ecosystems | what is life and what should we live for? | i think that question leans into philosiphy more than biology |
Populations, communities, and ecosystems | this is not biology this is english why are they just feeding us definitions and saying its biology sure it may be slightly related to biology but this is literally just definitions | we invent concepts to not have to keep making sense of the same things over and over again |
Populations, communities, and ecosystems | is the programing lesson beginner friendly? | Very much so. But please ask the question there, and not in the biology section. |
Populations, communities, and ecosystems | how many things can a ecostyem get befpre there is too many animals or objects in it? | This is an interesting question...... I think it would depend on the ecosystem itself and how populated it was. For example, if there were a desert with a lot of animals in it then most of them wouldn't last long. There just wouldn't be enough food to go around. |
Populations, communities, and ecosystems | what if we lived ina ecosystem | We are living in an ecosystem |
Populations, communities, and ecosystems | why didn't the rock show up in the community part | because communities only include living things |
Resources and population growth | what bird is that | They are seagulls, look at the image caption |
Resources and population growth | what is the difference between a community and an ecosystem | A *community* is a group of _different_ animals and organisms living in the same area while an *ecosystem* is _all_ of the organisms in an area plus every _nonliving_ part of the environment (sand, water, dirt, air etc.). |
Resources and population growth | how do i know whats an ecosystem, population, and community? | An ecosystem is everything that is alive and non living like water and soil along with the animals and plants. A population is a certain type of animal living together. A community is all the living things that are living close to each other. Does this help? |
Resources and population growth | But what will happen if the is water,food, air and space but too many animals and they start fighting and killing each other? Can that affect the growth and health of the animals? | yeah, they will fight with each other to get the limited amount of resources |
Resources and population growth | can we help ecosystem's | We can help ecosystems immensely in fact! Just look up videos of people helping and improving ecosystems to see for yourself. |
Resources and population growth | What if in a country there once was an abundant supply of water, then all of a sudden the water ran out? | A country with an abundant supply of water, like a river, would most likely rely on that river for agriculture, trade, and general housework. If that river dried up, they would depend on other sources of water from neighboring countries and whatnot. |
Resources and population growth | can an ecosystem affect us humans? | yes a city with pigeons cats humans and buildings is an ecosytem dominated by humans (not counting microbes) |
Competitive, predatory, and mutualistic interactions | Is there a scientific term for when two organisms of the same species benefit off each other or work together? If so, what is it called? | mutualism |
Competitive, predatory, and mutualistic interactions | What _is_ the *green* thing in the image above? | The green plant is a plant full of sweet honeydew. Aphids extract it, and the ants eat those aphids to keep that plant clean. |
Competitive, predatory, and mutualistic interactions | What kind of ant is that? | well if you read the caption it will tell you but the answer is, Carpenter ants. |
Competitive, predatory, and mutualistic interactions | what are Carpenter Ants Noah G? | Well I'm not Noah, (I know who you're talking about.) But Carpenter ants often carve into wood, and when they bite Humans they hurt. I think what the other person is referring to are Fire ants. Those are Exatally what he described! Hope this helps. |
Competitive, predatory, and mutualistic interactions | i think it is cool how the ants protect the aphids and they are friends i did not know what and aphids is at all please help thank you | Aphids are often considered pests, enough so that farmers sometimes go as far to release aphid-eating ladybugs on their fields to keep the aphid population under control. Hope this helps! |
Photosynthesis in ecosystems | So how do photosynthesis break down things? You know, for CO2 to become separated, there needs to be a separation. | Right. Sugar has carbon (C) in its structure, so by reacting CO2 with H2O (carbon dioxide with water), they create sugar and release oxygen (O2) as a by-product. |
Photosynthesis in ecosystems | what is the word biomass | Mass that is made of cells-biomass, so like a burger patty is technically biomass |
Photosynthesis in ecosystems | Did you know that more than 50% of the world's oxygen actually comes from the ocean? And not trees? | I did not know that lol |
Photosynthesis in ecosystems | wow how old are you gays i'm 11 | I'm not gay yet
maybe never |
Photosynthesis in ecosystems | what do it mean when it says it eats the soil | My guy plants don't eat soil, they rely on water and the sun |
Activity: what happens when a food web is disturbed? | How to u do the experiment?
I don't even get what it's about... | you can simply follow the STUDENT GUIDE above or you can do it with your classmates |
Matter and energy in food webs | Lol what do you call an organism that eats decomposers?
I mean the question | They are called scavengers. |
Matter and energy in food webs | are there some poison clams | Yes, there are two |
Matter and energy in food webs | Ok random question. I know that humans are technically at the top of the food chain. Does that mean vegetarians are not "considered" human scientifically because they are not at the top of the food chain, since they don't eat meat? | No. Humans are not defined by their diet. Humans are defined by their genetic code. That's like saying if a snake were to starve, is he really a snake? |
Matter and energy in food webs | In the first video, Sal described a bunny as a consumer, because it consumes a plant. But a bunny poops and poop is fertilizer for plants, this is a mutualistic environment, but wouldn't the bunny be a producer? Because the bunny produced the poop that acts like fertilizer for plants? | No producers are the ones that starts the food cycle because it can make its own food without consuming other organisms. Bunnies need to eat producers( plants ) in order to survive. Furthrmore, Plants dont need fertilizer to grow, they only need light and water to survive. Fertilizer(bunny poop) just encourages the plants to grow. |
Matter and energy in food webs | What do you call organisms that eat nearly anything (they eat primary consumers, producers, secondary consumers, decomposers, tertiary consumers, scavengers, and other types of consumers)? | Humans.
Let's be real here:
We have eaten literally almost every species on this planet!!
Not only that, but we live across the globe in all the biomes (except for the ocean)!
Hope this helps! |
Matter and energy in food webs | why dose the otter go back to the bacteria | Because when the otter dies, the bacteria (a.k.a. the decomposers) decompose that body for energy.
Hope this helps! |
Matter and energy in food webs | What is a "biomass"? lol I remember seeing it somewhere, just don't know where... :) | Biomass is the total mass of some population. You can also use biomass to compare the mass of other organisms. For example, 3,366 mice have about the same biomass as one human. Since it would take a really long time (and would be hard and boring) to count every living thing, we use biomass. Hope this helps 😋.
Sincerely, Straw Hat Pirates |
Matter and energy in food webs | what in a food wed? | A food web is a combination of all the different food chains in an ecosystem. |
Matter and energy in food webs | In the article it states that consumers are organisms who eat other organisms would that make humans who eat meat consumers? Or do the other organisms have to be living? | Humans count as consumers because they (even those who don’t eat animal products) get their energy from other organisms. These might be bean plants that made their energy from the sun, or they might be cows that ate grass that made energy from the sun. Either way, humans have to get their food from other organisms, so we’re consumers.
Does that help? |
Biodiversity and ecosystem health | To: Anyone that saw it,
After reading this article, I felt that humans are having a serious environmental impact. Hence, I would like anyone that sees this post to be aware of pollution and global warming. I do not want to talk about all those really dull stuff in textbooks, so I REALLY want you guys to take action with me!
Thanks!
Best wishes,
Moon_yl | Ok will do |
Biodiversity and ecosystem health | Key points:
Biodiversity is the variety of species in an ecosystem.
Biodiversity decreases when species go extinct, or die out. Extinction often happens when organisms can no longer survive because of changes to their ecosystems.
A decrease in biodiversity can be the result of human actions. For example, human actions are leading to habitat loss and climate change. These, in turn, are causing a decrease in Earth’s biodiversity.
When an ecosystem loses biodiversity, it doesn’t function as well. So, scientists often look at how complete an ecosystem’s biodiversity is in order to measure the ecosystem’s health. | sadness :( |
Biodiversity and ecosystem health | What happens if humans stop interacting with other species? Will the "safety net" break completely, or will there be a less major problem or even no problem? | it would most likely get better people have done lots of damage to lots of diferint ecosystems |
Biodiversity and ecosystem health | but there something i dont get. Lets say that the rabbit population is decreasing then the predetors eating rabbit start to decrease but when the predetors decrease, the rabbit population will increase meaning the it will go in a cycle over and over again. so if a prey population gets closer to extinction so do the predetors but then the prey get bigger again. So doesn't that mean that ecosystems/biodiversty can fix themselves? | But actually, the majority of extinction is caused by humans. |
Biodiversity and ecosystem health | I am wondering how mosquitoes interact with the other species in the ecosystem. How?? | Great question! Mosquitos typically are prey for other insects, birds and spiders. This helps the spiders and other creatures that eat mosquitoes eat, but also keeps the mosquito population stable and prevents it from skyrocketing. Mosquitoes also feed on animal blood. As far as interactions go, the main interaction is a food source for other animals and insects while also sucking blood out of animals, hope this helps! |
Biodiversity and ecosystem health | How does biodiversity exist | Simply because there are different species of living things on the planet.
Hope this helps! |
Biodiversity and ecosystem health | If a species that is not native to the area suddenly arrives, can that harm the ecosystem? What are they (the new species) called? | Good question!
When a non-native species arrives, they are generally called an "exotic species". If they harm the environment (which they often do), they are called "invasive". They often disrupt food webs by over-eating a native species. Invasive species are generally fast reproducers, because they wouldn't survive long if they weren't. Because of this, they take up a lot of space meant for native species. They also might overrun an ecosystem.
Hope this helps!
Here are some KA articles & videos on this subject:
https://www.khanacademy.org/science/ap-biology/ecology-ap/disruptions-to-ecosystems/a/invasive-species
https://www.khanacademy.org/science/ap-biology/ecology-ap/disruptions-to-ecosystems/v/introduced-species-and-biodiversity
Have a good day! |
Biodiversity and ecosystem health | How will this help me? | This will help you understand what biodiversity is and give you a better understanding of ecosystems. |
Humans and ecosystems | How do trees prevent erosions? | The trees roots block off the area for erosion to happen, and it sucks up water so there is less chance for erosion. |
Humans and ecosystems | what is the tallest mountain in the world | Mount Everest |
Humans and ecosystems | what is erosion? | Erosion, put simply, is when stone or dirt is weathered by wind, water, ice, or foot traffic, and particles of sediment are carried away. For example, a rock in a stream is slowly eroded by the water flow, and eventually becomes smooth. Trees and undergrowth help prevent the erosion of mountains and hillsides. |
Humans and ecosystems | How can tree roots prevent erosion? | Tree root systems help reduce erosion by holding soil in place. Even after being cut, the roots attached to the stump help stabilize soil for years. Reducing risk of landslides. |
Ecosystem dynamics | What is this going to do for me in the real world? | We are living on a rock in the middle of this infinite black nothingness and we've no idea how we got here. All we can do is try to understand the world around us. There is value outside in understanding that extends beyond immediate benefit |
Ecosystem dynamics | what came first the chicken or the egg? | (Edit)"In practice, it is impossible to pinpoint the moment when this happened. But in theory, at some trace, two junglefowl bred along with offspring was genetically different enough from the species of its parents classified as chicken. This chicken would have developed within a junglefowl egg and only produced the very first chicken’s egg on reaching maturity. Looking at it this way, the chicken came first." |
Ecosystem dynamics | was orange named orange cause it's orange or was the color orange was named orange cause it's orange | Not sure if I'm correct but I'm pretty sure the color was called orange because it resembled the color of the fruit orange. |
Ecosystem dynamics | what does disruptions mean | Something that prevents something from occurring. E.g. if a trench is formed between a population, the populations on opposite sides are not able to reproduce/interact with each other. |
Ecosystem dynamics | is it weird we have car but are car key have traveled more than our car | What does that have to do with anything? |
Ecosystem dynamics | I have a pet bird and it helps my green onions grow by giving it fertilizer | Nice |
Ecosystem dynamics | how did those types of animals end up their and how do they survive and reproduce | is the way life is |
Ecosystem dynamics | An area of forest burned by a fire. The changes caused by a forest fire affect populations in an ecosystem. Image credit: “Tinder Fire Burn Scar Area" by Coconino National Forest USDA, public domain. | sadness |
Genes, proteins, and traits | why do i have to do this? | U know, I've been thinking of that myself... but ever since I started mowing the grass so that I can make some homemade water then at the end of the day woke up asleep tomorrow, I realized that it's because u need to learn🤔! That's so crazy, isn't it? Anyways hope this helps 😊. |
Genes, proteins, and traits | what is amino acids? | _*Amino acids are molecules that combine to form proteins*. Amino acids and proteins are the building blocks of life. When proteins are digested or broken down, amino acids are left. The human body uses amino acids to make proteins to help the body: Break down food._ |
Genes, proteins, and traits | How many types of protein can there be? | there can be about 10,000 different proteins. |
Genes, proteins, and traits | Are amino acids tiny proteins? | Amino acids are small molecules that are the building blocks of proteins. Proteins serve as structural support inside the cell and they perform many vital chemical reactions. Each protein is a molecule made up of different combinations of 20 types of smaller, simpler amino acids. Hope this helps. |
Genes, proteins, and traits | y is there cells in grass :/ | because the grass is a living thing. and cells are what make life possible. |
Genes, proteins, and traits | What are Amino Acids? | Amino acids are molecules that are combined to form proteins. Basically when proteins are broken down/digested the amino acids still remain, it's used by the body to create proteins and to break down food. |
Genes, proteins, and traits | what are amino acids | _*Amino acids are molecules that combine to form proteins*. Amino acids and proteins are the building blocks of life. When proteins are digested or broken down, amino acids are left. The human body uses amino acids to make proteins to help the body: Break down food._ |
Genetics vocabulary and Punnett squares | what happens when there is two dominant alleles? | Both will be expressed; both will blend.
The blending will also happen with two recessive alleles. |
Genetics vocabulary and Punnett squares | what does genetic code mean? | Genetic codes are the 'instructions' that tell our cells how to reproduce. |
Mutations | So you can change the DNA in humans/animals but has it actually been done in humans before? I know its been done in animals, but has anyone changed human DNA? | He Jiankui affair
You can try to google it, but shortly: Yes, it was successful experiment however the scientist was sentenced for that |
Mutations | If I got bit by a radioactive spider and turned into a hero,,,, Would that be a mutation? | Well, technicaly that would be less of a natural mutation and more of a forced rearrangement of your dna involving your pores in your limbs. Although radioactivity is know to cause mutations, this spider doubtabley had enough in it to cause a mutation. |
Mutations | How easy would you say it could be to have a mutation\be born with one percent wise? | I am not sure what the exact odds are, but a lot of mutations go largely unnoticed, so it could be that a lot of people have at least one mutation. |
Mutations | Is there a specific limit to change the dna in human DNA? | 2%. Otherwise you would no longer be human.
Hope this helps! |
Mutations | wait, so if you get a really good cell mutation, you might get something that maybe lowers your risk of getting cancer. Thats pretty cool and life saving | Yes, while that is possible, and a nice possibility, some forms
of cancer are caused by mutations. |
Mutations | what is a mutation? | _From the article_
*Harmful mutations* have _negative_ effects on an organism’s health and survival. For example, some mutations cause inherited disorders such as sickle cell anemia and cystic fibrosis.
*Beneficial mutations* have _positive_ effects on an organism’s health and survival. For example, some people have mutations that lower their risk of developing type 2 diabetes.
*Neutral mutations* have _no observable effect_ on an organism’s traits. For example, some gene mutations do not lead to amino acid changes, and so do not affect protein function.
*Beneficial mutation example*: When humans were in their ape stage, they evolved over time; learning to use tools, create machines, and form a community. This is a beneficial mutation, as these skills are now very necessary to us these days.
*Harmful mutation example*: Sometimes however, some mutations end up becoming harmful. Cancer is a example of this. The parents might have had some harmful genes that put them at risk of cancer. When they had a kid, the genes mutated and formed a higher risk of cancer for the kid, sometimes just giving him cancer.
*Neutral mutation example*: Often times, these are small and unnoticed, because they don't really affect a human, or their DNA, or their biology. Different eye colors are an example of a neutral mutation.
Hope this helped :D |
Mutations | what is a gene protein | Proteins are large, complex molecules that play many important roles in the body. They are critical to most of the work done by cells and are required for the structure, function and regulation of the body’s tissues and organs. A protein is made up of one or more long, folded chains of amino acids (each called a polypeptide), whose sequences are determined by the DNA sequence of the protein-encoding gene.
Protein. Most familiar are proteins that make up structures, such as muscle and, very importantly, proteins that fold and form what are known as enzymes. These proteins help your body carry out all of the chemical reactions it needs to keep you alive.
Did this help at all? |
Activity: why do some mutations cause genetic disorders? | Does vaping cause genetic disorders? | It does if you plan to give birth |
Chromosomes and genes | Can people still be tall if they have short parents and family | Technically, yes they can. If the parents are both short but have a dormant tall gene, that tall gene can be passed on to the child. |
Chromosomes and genes | How many genes are in a cell? | Around 50,000 genes. There are also 24 chromosomes (groups of genes) in every cell. |
Chromosomes and genes | why do some kids look like there grandparerents? | yeah like he said, you can look like just about any family member. genes get passed. even people back in the day that you were related to, just a small chance. |
Chromosomes and genes | I see many questions about genes and appearance, so I will try to explain some. Your gender (you being male or female), is decided by your mother and father's genes, whether you have XX chromosomes, which make you female, or XY chromosomes, which make you male.
Now, along with this, your father and mother's genes which are passed onto you, do a fun sort of dance while you are in your mother's womb, to create entirely new combinations to make an entirely new person, which is you!
Why do some people look like one parent or the other? One parent may have stronger genes then the other parent, so certain traits are more visible or apparent, which is why some people look very like the parent with stronger genes, but this does not mean you are like that parent in every way because genes decide much more then appearance, just because you look like, say, your dad, doesn't mean you act like him, or have the same health he does. Some people are a mix of their parents.
Sometimes, kids look like their grandparents, or a grandparent, in this case, it's likely that your grandparent's genes, which are carried their child, which is your parent, has been passed to you, and they just strongly show in you. | Thanks for sharing this. You might want to put each answer under its question, even though that could take more time. This post is technically in the wrong category, and I don’t want your post just taken down or anything.
I was wondering about how you said parents’ genes “do a fun sort of dance while you are in your mother's womb, to create entirely new combinations.” It was my understanding that one parent’s genes combine with themselves during meiosis. Then both parents’ genes combine during fertilization, which is what makes you (the zygote). The genes don’t combine while you’re in utero, but they do eventually combine to _make_ you, right? |
Chromosomes and genes | if a cell can multipluy and the genes are in the cell do the genes multipluy | Yes, the genes do multiply, and the genes get cloned as part of the process. As people age, however, this process gets more difficult for the body, which is why when people get older they stop growing. |
Chromosomes and genes | Why do some kids look like their dad more than there mom? | According to a study published in Scientific American, babies tend to look more like their fathers than their mothers. This is because fathers are less certain that a baby is theirs and are more likely to invest whatever resources they have in their own offspring. However, there is no scientific evidence that supports this claim.
Another theory suggests that genetics cause people to look and behave more like their dads than their moms. This is because children inherit half of their genetic material from each parent, and some traits are determined by genes on the sex chromosomes (X and Y). Since males have only one X chromosome, they will pass on all of their X-linked genes to their daughters but none to their sons. On the other hand, females have two X chromosomes, so they will pass on one of their X chromosomes to both their sons and daughters.
It's important to note that while some children may resemble one parent more than the other, this does not mean that they are more related to one parent than the other. Children inherit half of their genetic material from each parent, so they are equally related to both parents. |
Chromosomes and genes | can your DNA change through experiments | Yes. DON'T try it, unless you're absolutely positively certain that you know what you're doing. |
Chromosomes and genes | How is DNA formed? | DNA, or deoxyribonucleic acid, is formed through a process called DNA replication. DNA replication occurs during the cell division process known as the S phase of the cell cycle. Here are the key steps involved:
1. Initiation: The DNA double helix unwinds and separates into two strands. An enzyme called DNA helicase breaks the hydrogen bonds between the base pairs, causing the DNA strands to separate and form a replication fork.
2. Primer Binding: Primers, which are short RNA sequences, are synthesized and bind to the DNA template strands. These primers provide a starting point for DNA synthesis.
3. Elongation: DNA polymerase, an enzyme, attaches to the primer and begins synthesizing new DNA strands. It reads the template strand and adds complementary nucleotides to each growing daughter strand. Adenine (A) pairs with thymine (T), and cytosine (C) pairs with guanine (G), maintaining the base pairing rules.
4. Leading and Lagging Strand Synthesis: DNA replication occurs in a semi-discontinuous manner due to the antiparallel nature of the DNA strands. The leading strand is synthesized continuously in the 5' to 3' direction, while the lagging strand is synthesized discontinuously in small fragments called Okazaki fragments. These fragments are later joined together.
5. Termination: Once the entire DNA molecule has been replicated, termination signals halt the replication process. The DNA strands are fully synthesized, and the new double-stranded DNA molecules are ready for further cellular processes.
DNA replication is a highly precise and complex process that ensures accurate transmission of genetic information from one generation of cells to the next. It plays a crucial role in the growth, development, and reproduction of organisms. |
Chromosomes and genes | Can we change the genes of a person also after the birth? | Gene therapy , or somatic gene editing, changes the DNA in cells of an adult or child to treat disease, or even to try to enhance that person in some way. The changes made in these somatic (or body) cells would be permanent but would only affect the person treated. |
Chromosomes and genes | what's the difference between Adams and molecules | I think you mean atoms :)
If you are talking about Adams, be informed that all things are made up of atoms, so all Adams are made up of atoms.
If you do mean atoms, the thing is, molecules are made up of atoms. For example, a molecule may contain 2 hydrogen atoms and 1 oxygen atom. This creates a water molecule. |
Sexual reproduction and genetic variation | Can two black parents have a white child? | I believe it is _possible_ but very rare. |
Sexual reproduction and genetic variation | why do they look like x? | this is from what I looked up. "Chromosomes look like an x because there are two strands that are bonded together near the middle of the strand. Proteins are what holds these two strands together, which is called the centromere. When looking at a karyotype image of all 23 pairs, you can see how each strand look like an x because of that bond." so its basically saying that they're connected together by some strands of proteins. |
Sexual reproduction and genetic variation | what are gametes | Gametes are the kinds of cells that are able to join together to make children. |
Sexual reproduction and genetic variation | How does sexual reproduction relate to genetic variation? | Sexual reproduction is related to genetic variation. I'll explain below.
During fertilization, each parent produce a gamete, as either an egg, (female), or sperm, (male), cells. These cells are haploid, meaning they each have one set of chromosomes, or 23 chromosomes.
Since these chromosomes come from both of the parents, they contain DNA from both of the parents. This is because chromosomes are made up of DNA, which is made up of specific parts of DNA, or genes. These genes create proteins, based upon the nucleotides in the genes. These genes carry out different functions, which are based upon the nucleotides in the genes. These proteins can cause the offspring to have different traits.
The offspring of the parents has 46 chromosomes, (23 from each parent). Because the offspring gets a mixture of chromosomes from each parent, (which effects the offspring's traits), the offspring has different traits, some from each parent.
There are so many different combinations of chromosomes that an offspring can have from its parents. This is why even siblings look different, even when coming from the same parents.
These differences between a offspring and its parent, or two siblings, can all be called genetic variation.
I hope this helped describe the relationship between sexual reproduction and genetic variation. |
Sexual reproduction and genetic variation | what are gametes | A gamete is a reproductive cell of an animal or plant. In animals, female gametes are called ova or egg cells, and male gametes are called sperm. Ova and sperm are haploid cells, with each cell carrying only one copy of each chromosome. |
Sexual reproduction and genetic variation | what happenings if none of the sperm makes it pass the uteri's | then no baby |
Chromosome pairs | am i adopted because i dont have my parents hair color | Your hair color doesn't necessarily come from your parents, it could be from your grandparents or great grandparents or so on |
Chromosome pairs | why do they get down syndrome. | If they have an extra chromosome 21 it causes down syndrome |
Chromosome pairs | Why do they have different alleles, or versions, of those genes? | "During meiosis, homologous chromosomes line up and recombination occurs between them. This results in gametes with unique combinations of alleles on each chromosome and therefore unique individuals." |
Chromosome pairs | how do homologous contain the same genes | homologous chromosomes are 2 chromosomes that have the same genes, but those genes don't have to be the same versions.
like how I have hair and my friend has hair, but we have different versions or types of hair.
so let's take a pair of homologous chromosomes in my cell. 1 chromosome in this pair, let's call it chromosome "A", was given to me by my mum. she gave me a chromosome that was a mixture of her chromosomes (so it has some of her moms genes in it and some of her dads genes in it )
and the other chromosome in the pair was given to me by my dad, it has some of his dads genes in it and some of his moms genes in it)
now why did these two chromosomes pair u? well they paired up cuz they have the same sets of genes on them, like they have genes for hair colour, but they gene that will be active in my will be the more dominant one. |
Chromosome pairs | Is it possible for human offspring to only get 10% of the genes from their parents? | Yes... but only due to a HUUGE mutation.
Just a 2% differentiation in gene structure can create a whole new species.
Hope this helps. |
Chromosome pairs | why are they green and red? | That's just how they look under an X-ray. |
Earth's fossil record | Why do fossils take so long to decay. | This is because they lived in the sea, where sand or mud could bury their remains quickly after they died. Once remains are buried under sediment, their decomposition slows down due to a lack of oxygen, giving enough time for fossilisation to occur. |
Earth's fossil record | why do fossils take so long to decay | This is because they lived in the sea, where sand or mud could bury their remains quickly after they died. Once remains are buried under sediment, their decomposition slows down due to a lack of oxygen, giving enough time for fossilisation to occur. |
Earth's fossil record | what does the fossils tell us | They can give us clues to what old species may have looked like or their bone structures and even more, we can even tell how old these fossils are by using radiology, which also tells us how old the extinct species are, there is many things! |
Earth's fossil record | why do mass extinction happen? | Mass extinctions are caused by extreme changes. An example would be the asteroid that killed the dinosaurs. There have been 5 mass extinctions, some caused by extreme temperature changes, asteroid impacts that push so much ash into the atmosphere it blocks the sun for decades, and changes in atmospheric composition such as increases in CO2 and Oxygen. |
Earth's fossil record | Can you tell how long they have been there? | yes using radiometric dating to see how much decay of certan things that were in the living organism sientists know how fast it happens so can tell how old they are |
Earth's fossil record | How can fossils be preserved in sedimentary rock if it can break? what will happen? | Well they stay in good condition because the rocks take very long to fully harden, because of this and the fact that they are buried under the ground, they are preserved and then can be dug up later by let’s say humans. Now if the rock was to break when people would try and get it out then simply the fossil would break. Breaking is unlikely to happen due to how big these rocks can be, I mean think about it, they are underground for many many MANY *MANY* Years. So the sediment forms together and makes a HUGE rock. |