Question

Why is MtDNA ideal for human evolutionary research?
a) it never changes at all but remains exactly the same throughout every generation
b) because it is a combination of both the mother's and the father's DNA it is influenced by both random mutation and natural selection
c) it is influenced by neither random mutation nor natural selection
d) because it is inherited only from the mother, it does not recombine and so variations occur only through random mutation, forming a relatively reliable molecular clock
e) MtDNA is not ideal for evolutionary research; scholars prefer nuclear DNA

Answer

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