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 the above cited statement be approximated?

Question

Dr. Abubacker · Accepted Answer

Biogenetic law was propounded by Ernst Haeckel in 1860. According to it, during the development of an animal heart, it passes through ancestral adult stages.

Q. 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 the above cited statement be approximated?

Explanation

Reviewed by Dr. Abubacker

Want more practice?