What were the characteristics of life forms that had been fossilised?

Some persons can move their pinnae. This ability is imparted by

By the discovery of the banding pattern in the chromosome technique of gorillas and humans,what was easy to predict?

Which of the set represents vestigial organs?

Which of the following is a vestigial organ in humans?

In the evolutionary history of the human heart,it is observed that it passed through a two-chambered heart like that of fish,to a three-chambered heart like that of amphibians,and finally became a four-chambered heart. Which concept is closest to this statement?