Explain with suitable examples importance of anatomical evidences in evolution
Ans :
i) Organisms with similar anatomical features are assumed to be relatively closely related evolutionarily and they are assumed to share a common ancestor.
ii) Some organisms have anatomical structure that are very similar in embryological development and form but very different in function.
iii) Since, these structure are so similar, they indicate an evolutionary relationship and a common ancestor of the species that possess them.
iv) If the pictures are carefully observed, it will be seen that there doesn't seem any superficial similarity between human hand, cat's fore leg, flipper of whale and patagium of bat.
v) Similarly, use of each of those structures is different in respective animals.
vi) However, there is similarity in structure of bones and bony joints in organs of each of these animals. This similarity indicates that these animals may have common ancestor.