Natural Selection Quiz

What is an adaptation?

• Traits that offer an advantage that will most likely be passed on to offspring.

• Trait that enhances an organism's ability to survive and reproduce in its environment.

• Traits that organisms develop over a lifetime, such as strong muscles from working out.

• None of the above.

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Natural selection is the process by which organisms with traits that better enable them to adapt to their environment will tend to survive and reproduce in greater numbers.

• True

• False

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Which statement best explains the relationship between evolution and natural selection

• Natural selection is evolution.

• Evolution occurs by natural selection.

• Evolution leads to natural selection.

• Natural selection occurs by evolution.

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Darwinian "fitness" best relates to the _________ of an individual within a population.

• Muscular mass

• Reproductive success

• Brain size

• All of the above

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The diversity of species increases the chance that at least some organisms adapt and survive any major changes in the environment.

• True

• False

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Natural selection does not distinguish between __________ and ________ genotypes with the same phenotype

• Homologous

• Heterozygous

• Homozygous

• Hemizygous

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An __________ is a feature passed from one generation to the next.

• Acquired trait

• Inherited trait

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Why is the white fur of an Arctic hare Beneficial?

• White fur offers protection in the snow.

• White fur keeps the rabbit warm.

• White fur is better suited to mating.

• All of the above

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Does natural selection act on the genotype or phenotype?

• genotype

• phenotype

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If the recessive allele r is lethal, what genotypes will natural selection benefit?

• RR only

• Rr and rr

• R only

• RR and Rr

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