Evolution Biology YY

If a trait that was inherited from the parents increases an organism's ability to survive and then reproduce, what is this trait?

• an adaptation

• an organisms fitness

• a mutation

• artificial selection

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Darwin theorized that individuals having an advantage due to their traits or abilities will be more likely to survive and reproduce. This theory is known as

• evolution

• speciation

• adaptation

• natural selection

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Remains of ancient organisms are called

• Extinctions

• Fossils

• Mutations

• Variations

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If an organism has a vestigial structure, that structure likely once had a function in a(n)

• close relative

• unrelated organism

• early ancestor

• embryological stage

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the hind leg bones in a whale are examples of

• homologous structures

• analogous structures

• fossils

• vestigial

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What is the study of organisms at the early stages of development?

• DNA studies

• embryology

• extinction

• fossil record

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What is this an example of?

• vestigial structures

• embryology

• homologous structures

• fossil record

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Structures in organisms that have the same function due to similar environmental pressures.

• Analogous Structure

• Homologous Structure

• Vestigial Structures

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What is the movement of genes into and out of a gene pool called?

• random mating

• nonrandom mating

• gene flow

• direct evolution

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Two organisms that are closely related would have

• very similar DNA sequence

• exactly the same DNA sequences

• no proteins in common

• completely different DNA sequence

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