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which one of the following is refer to the term atavism in man. appearance of hidden characters evolution of exicting characters reappearance of ancestral character loss of pre-exixting characters

which one of the following is refer to the term atavism in man.
  1. appearance of hidden characters
  2. evolution of exicting characters
  3. reappearance of ancestral character
  4. loss of pre-exixting characters

Grade:12th pass

2 Answers

askIITians Faculty 164 Points
6 years ago
Hello Student
Correct answer is 3) Reappearance of ancestral characters
Avatism is reappearance of certain ancestral characters which had either disappeared or were reduced During this period of life.
For Example ; – Greatly developed canine teeth.
Raheema Javed
156 Points
6 years ago
The correct answer is (3) reaapearance of ancestral character

Atavism is the tendency to revert to ancestral type. In biology, an atavism is an evolutionary throwback, such as traits reappearing which had disappeared generations before.
Atavisms can occur in several ways. One way is when genes for previously existing phenotypical features are preserved in DNA, and these become expressed through a mutation that either knock out the overriding genes for the new traits or make the old traits override the new one.

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