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Evolution

Question
CBSEENBI12047069

Assertion: Among the primates. chimpanzee is the closest relative of the present day humans.

Reason: The banding pattern in the autosome numbers 3 and 6 of man and chimpanzee is remarkably similar.

  • If both Assertion and Reason are true and Reason is the correct explanation of Assertion

  • If both Assertion and Reason are true but Reason is not the correct explanation of Assertion

  • If Assertion is true but Reason is false

  • If both Assertion and Reason are false.

Solution

A.

If both Assertion and Reason are true and Reason is the correct explanation of Assertion

Carolus Linnaeus called humans as Homo sapiens or wise men and placed them along with apes and monkeys. There are certain similarities between human and chimpanzee. These are ­

(i) RNA content of diploid cells is similar

(ii) DNA matching shows that human similarity is 100 % with chimpanzee and

(iii) banding pattern of chromosomes shows very little difference in chromosomes 3 and 6 between humans and chimpanzee. Thus it can be concluded that among the primates, chimpanzee is the closest relative of the present day humans