Background: As new changes in the DNA sequence are constantly being generated in a population's gene pool (changing the population's allele frequencies), some of these changes will be beneficial and result in traits that allow adaptation and survival. Natural selection causes evolution of a species as these beneficial traits become more common within a population. Evolution can occur within a species without completely resulting in a new species. Therefore, evolution and speciation are not the same.

Situation: Sam has been a doctor for 50 years. Now semiretired he often thinks about how medicine has changed over his life time. When he was a new doctor antibiotics were given out when ever some one had any kind of infection. Sam remember that giving antibiotics for ear infections was the standard. However over the years this approach seemed less effective. It seemed that bacteria that were once easily eliminated by antibiotics were not effected any more. Soon doctors were limiting how often they prescribed antibiotics to keep the bacteria from adapting.

Question: Was the bacteria changing or staying the same?

Situation: Sam has been a doctor for 50 years. Now semiretired he often thinks about how medicine has changed over his life time. When he was a new doctor antibiotics were given out when ever some one had any kind of infection. Sam remember that giving antibiotics for ear infections was the standard. However over the years this approach seemed less effective. It seemed that bacteria that were once easily eliminated by antibiotics were not effected any more. Soon doctors were limiting how often they prescribed antibiotics to keep the bacteria from adapting.

Question: What was the bacteria adapting to?

Situation: Sam has been a doctor for 50 years. Now semiretired he often thinks about how medicine has changed over his life time. When he was a new doctor antibiotics were given out when ever some one had any kind of infection. Sam remember that giving antibiotics for ear infections was the standard. However over the years this approach seemed less effective. It seemed that bacteria that were once easily eliminated by antibiotics were not effected any more. Soon doctors were limiting how often they prescribed antibiotics to keep the bacteria from adapting.

Question: What was the bacteria doing to survive?

Situation: Sam has been a doctor for 50 years. Now semiretired he often thinks about how medicine has changed over his life time. When he was a new doctor antibiotics were given out when ever some one had any kind of infection. Sam remember that giving antibiotics for ear infections was the standard. However over the years this approach seemed less effective. It seemed that bacteria that were once easily eliminated by antibiotics were not effected any more. Soon doctors were limiting how often they prescribed antibiotics to keep the bacteria from adapting.

Question: Was the bateria before and after antibiotics the same or a diffrent species.?

Situation: Sam has been a doctor for 50 years. Now semiretired he often thinks about how medicine has changed over his life time. When he was a new doctor antibiotics were given out when ever some one had any kind of infection. Sam remember that giving antibiotics for ear infections was the standard. However over the years this approach seemed less effective. It seemed that bacteria that were once easily eliminated by antibiotics were not effected any more. Soon doctors were limiting how often they prescribed antibiotics to keep the bacteria from adapting.

Question: What was changing it's DNA?

Situation: Sam has been a doctor for 50 years. Now semiretired he often thinks about how medicine has changed over his life time. When he was a new doctor antibiotics were given out when ever some one had any kind of infection. Sam remember that giving antibiotics for ear infections was the standard. However over the years this approach seemed less effective. It seemed that bacteria that were once easily eliminated by antibiotics were not effected any more. Soon doctors were limiting how often they prescribed antibiotics to keep the bacteria from adapting.

Question: Where the changes to the bacteria harmful or helpfull?

Situation: Sam has been a doctor for 50 years. Now semiretired he often thinks about how medicine has changed over his life time. When he was a new doctor antibiotics were given out when ever some one had any kind of infection. Sam remember that giving antibiotics for ear infections was the standard. However over the years this approach seemed less effective. It seemed that bacteria that were once easily eliminated by antibiotics were not effected any more. Soon doctors were limiting how often they prescribed antibiotics to keep the bacteria from adapting.

Question: Was the bacteria evolving or staying the same?

Situation: In population of mice, young mice could be born with one of three colors. They were born with grey, black or white fur. Initially the color was random. However black coloring made the mice easy targets for fox and cats during the day while white coloring made them easy targets for owls at night.

Question: Which colors were a disadvantage?

Situation: In population of mice, young mice could be born with one of three colors. They were born with grey, black or white fur. Initially the color was random. However black coloring made the mice easy targets for fox and cats during the day while white coloring made them easy targets for owls at night.

Question: Which color was an advantage?

Situation: In population of mice, young mice could be born with one of three colors. They were born with grey, black or white fur. Initially the color was random. However black coloring made the mice easy targets for fox and cats during the day while white coloring made them easy targets for owls at night.

Question: Which color mouse was least likely to reproduce?

Situation: In population of mice, young mice could be born with one of three colors. They were born with grey, black or white fur. Initially the color was random. However black coloring made the mice easy targets for fox and cats during the day while white coloring made them easy targets for owls at night.

Question: Which color mouse was most likely to reproduce?

Situation: In population of mice, young mice could be born with one of three colors. They were born with grey, black or white fur. Initially the color was random. However black coloring made the mice easy targets for fox and cats during the day while white coloring made them easy targets for owls at night.

Question: Which color mouse was most likely to pass on genes?

Situation: In population of mice, young mice could be born with one of three colors. They were born with grey, black or white fur. Initially the color was random. However black coloring made the mice easy targets for fox and cats during the day while white coloring made them easy targets for owls at night.

Question: Which color mouse was most least likely to pass on genes?

Situation: In population of mice, young mice could be born with one of three colors. They were born with grey, black or white fur. Initially the color was random. However black coloring made the mice easy targets for fox and cats during the day while white coloring made them easy targets for owls at night.

Question: What color mouse would become more common over time?

Situation: In population of mice, young mice could be born with one of three colors. They were born with grey, black or white fur. Initially the color was random. However black coloring made the mice easy targets for fox and cats during the day while white coloring made them easy targets for owls at night.

Question: What color mouse would become less common over time?

Situation: In population of mice, young mice could be born with one of three colors. They were born with grey, black or white fur. Initially the color was random. However black coloring made the mice easy targets for fox and cats during the day while white coloring made them easy targets for owls at night.

Question: What color mouse was favored by natural selection?

Situation: In population of mice, young mice could be born with one of three colors. They were born with grey, black or white fur. Initially the color was random. However black coloring made the mice easy targets for fox and cats during the day while white coloring made them easy targets for owls at night.

Question: Were the grey mice a new or the same species?