Q: Answer the following question given this paragraph: Macroevolution occurs over geologic time above the level of the species. The fossil record reflects this level of evolution. It results from microevolution taking place over many generations. Q: Microevolution occuring and taking place over many generations results in? A:

OPTIONS:
- fission
- microinjection
- recalibration
- macroevolution

A: macroevolution

Q: Answer the following question given this paragraph: It is believed that large mutations form new genes. Mutations that duplicate large sections of DNA are a major source of genetic material for new genes. It is thought that tens to hundreds of genes are duplicated in animal genomes every million years. Most genes belong to larger families of genes of shared ancestry. These gene families have domains within the protein with a particular and independent function. These domains have corresponding conserved regions within their genes. It is through duplication mutations that such gene families formed. Genetic recombination after duplication of different domains forms new combinations of domains with new functions. For example, the human eye uses four genes to make structures that sense light: three for color vision and one for night vision; all four arose from a single ancestral gene. Q: What is essential for forming new genes? A:

OPTIONS:
- enough mutations
- enough chromosomes
- chromosome deversity
- large mutations

A: large mutations

Q: Answer the following question given this paragraph: A chemical reaction occurs when some substances change chemically to other substances. Chemical reactions are represented by chemical equations. Q: What occurs when some substances change chemically to other substances? A:

OPTIONS:
- toxic reaction
- spontaneous mutation
- hormonal reaction
- chemical reaction

A: chemical reaction

Q: Answer the following question given this paragraph: The three theories below are essential in Earth science. Each accounts for an enormous amount of data. Each is supported by many lines of evidence. All can be used to make predications. As new evidence arises, any of these theories may need to be altered. But none of these three are likely ever to be disproved. They are accepted by nearly all of the credible scientists in their fields. Q: In science, what is supported by much evidence, widely accepted by credible scientists, and unlikely to be disproved? A:

OPTIONS:
- law
- concept
- hypothesis
- theory

A:
theory