Variation in Population

He developed the theory of evolution

• Linnaeus

• Lamarck

• Darwin

• Aristotle

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A drastic reduction in the size of a population that can change allele frequencies is called

• the bottleneck effect

• the founder effect

• the gene flow effect

• the Thanos effect

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The allele frequencies of the mouse population in the picture are changing over time. Which is true?

• The population is evolving.

• The population is not evolving.

• The population will go extinct.

• The population's genetic variation is increasing.

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Someone steps on some bugs and randomly removes their alleles from the population. This is an example of

• gene flow

• genetic drift

• speciation

• allele frequency

There are 3 T alleles and 7 t alleles in a population. Calculate the frequency of the recessive allele.

• 30%

• 70%

• 10%

• 4%

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Which is not true about cheetah populations?

• They have experienced bottlenecks in their evolutionary history.

• They have high levels of genetic variation.

• They are prone to extinction.

• They are not likely to survive environmental changes due to their similarities.

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The Amish have a higher frequency of polydactyly (extra fingers) in their community than the general population. This is due to the allele for extra fingers being present in the group that started the Amish community.

• The difference in allele frequency is due to genetic flow.

• The difference in allele frequency is due to the founder effect.

• The difference in allele frequency is due to a bottleneck.

• The difference in allele frequency is due to speciation.

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If a population of lizards is isolated on an island, with no new immigrants over many years, any new genetic variations are most likely to come from

• recessive alleles

• natural selection

• mutations

• speciation

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What is the frequency of the dominant allele in this population?

• 30%

• 50%

• 63%

• 37%

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The movement of alleles from one population to another is called

• genetic drift

• the bottleneck effect

• the founder effect

• gene flow

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