Standard practice
when darwin first proposed his theory of evolution by natural selection, the field of
genetics did not yet exist. in what way does genetic science now contribute to the
study of evolution?

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explanation:

b r

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is this for the e2020 class

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands