Question

A baby has been born with a small tail. It is the case exhibiting

• A. Retrogressive evolution
• B. Mutation
• C. Atavism
• D. Metamorphosis

Answer 1

The correct option is C Atavism

Atavism is the reappearance of ancestral and not parental characters in an organism, which do not occur normally. For example, tail is absent in man, but occasionally a human baby is born with a short fleshy tail.
A baby has been born with a small tail. It is the case exhibiting atavism. Atavism is the sudden appearance of some ancestor characters, which are lost during course of evolution.

Therefore, the correct answer is option C.