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All the vertebrates are chordates – and all tetrapods are vertebrates – and all amniotes are...

All the vertebrates are chordates – and all tetrapods are vertebrates – and all amniotes are tetrapods. Each of these leading to the amniotes resulted in major morphological change.

a) How do you explain the major differences in terms of evolutionary selection for each of these groups?

b) Why are intermediate organisms (like the Tiktallik) often species which don't survive for long periods in the fossil record?

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Expert Solution

Ans. - a

Ans. - b

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