The homologous organs are
Wings of pigeon and housefly
Wings of housefly and bat
Wings of pigeon and forelimbs of man
Wings of butterfly, bat and housefly
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
Cranial capacity of modern man is