Can a biologist test the four postulates of evolution by natural selection when the alleles responsible for variation are not known or the molecular mechanism of adaptation has not been identified?

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Yes. A biologist must determine whether the trait under investigation is heritable. This can be determined experimentally for quantitative traits.

No. A biologist must demonstrate that more offspring are produced than can survive.

No. A biologist cannot verify postulate 2 of evolution by natural selection (variation is heritable) without determining the alleles responsible for variation or the molecular mechanism of adaptation.

Yes. However, a biologist must identify the DNA sequence of the gene or mutant amino acid in the protein responsible for the adaptation.

 

asked Dec 28, 2012 in Biology by anonymous
    

1 Answer

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Yes. A biologist must determine whether the trait under investigation is heritable. This can be determined experimentally for quantitative traits.

 

answered Dec 28, 2012 by anonymous

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