LIFE SCIENCE

Detailed explanation-1: -Some examples, include the appearance of hind limbs in whales as evidence of a terrestrial ancestor, teeth exhibited by chickens, additional toes observed in modern horse species, and the back flippers of bottlenose dolphins.

Detailed explanation-2: -Which of the following are molecular evidences for common descent?-All organisms use the same DNA triplet code and the same amino acids in their proteins.

Detailed explanation-3: -Most of the beetles in the population (say 90%) have a gene for green coloration and a few of them (10%) have a gene that makes them brown. Several generations later, things have changed: brown beetles are more common and make up 70% of the population.

Detailed explanation-4: -For example, the amino acid sequence of cytochrome c in humans and chimpanzees is identical, although they diverged about 6 million years ago; between humans and rhesus monkeys, which diverged from their common ancestor 35 million to 40 million years ago, it differs by only one amino acid replacement.