Biology : PU-CET (U.G) 2018 Panjab University Entrance Exam With Answers

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52.

Dollo's law states that

A: Living organisms exhibit evolutionary irreversibility
B: Ontogeny recapitulates phylogeny
C: Evolution of animals was a series of attempts by nature to produce more perfect forms q
D: Life has ever been in existence in the form as it exists today

The answer is: A

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