In the developmental history of mammalian heart, it is observed that i – McqOptions

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1.	In the developmental history of mammalian heart, it is observed that it passes through a two?chambered fish?like heart, three?chambered frog?like heart and finally four?chambered stage. To which hypothesis can this above cited statement be approximated [CBSE PMT 1998]
A.	Biogenetic law
B.	Hardy Weinberg law
C.	Lamarck's principle
D.	Mendelian principle
Answer» B. Hardy Weinberg law

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