EVOLUTION
EVIDENCE FOR EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The two main sources of genetic variation are
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genotypes and phenotypes.
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gene shuffling and mutations.
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single-gene traits and polygenic traits.
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directional selection and disruptive selection.
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Explanation:
Detailed explanation-1: -Origins of genetic variation Mutations and recombination are major sources of variation.
Detailed explanation-2: -Overall, the main sources of genetic variation are the formation of new alleles, the altering of gene number or position, rapid reproduction, and sexual reproduction.
Detailed explanation-3: -The two main sources of genetic variation are mutations and the genetic shuffling that results from sexual reproduction.
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