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Question
Which of the following is the example of atavism?
Which of the following is the example of atavism?
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Solution
The correct option is D Cervical fistula of man
Atavism can be defined as the reappearance of a characteristic in an organism that has been disappeared generations before. Cervical fistula of man is an example of atavism. Other examples of atavism in humans are unusually profuse hair, a tail, and additional nipples. Cervical fistulas are canals in the area of the throat and outer skin of the neck, and they are seen as gill slits which have been remained open (return to the fish stage). Unusual hair is a reminder of ancestors with fur. A tail like structure in the coccygeal region is the indication of ancestors with a tail.So, the correct answer is option C.
Atavism can be defined as the reappearance of a characteristic in an organism that has been disappeared generations before. Cervical fistula of man is an example of atavism. Other examples of atavism in humans are unusually profuse hair, a tail, and additional nipples. Cervical fistulas are canals in the area of the throat and outer skin of the neck, and they are seen as gill slits which have been remained open (return to the fish stage). Unusual hair is a reminder of ancestors with fur. A tail like structure in the coccygeal region is the indication of ancestors with a tail.
So, the correct answer is option C.
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