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Question

Which kind of evidence suggests that man is more closely related with chimpanzees than with other hominoid apes?

A
Evidence from DNA extracted from sex chromosome alone
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B
Comparison of the morphology of chromosomes alone
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C
Evidence from fossil remains and the fossil mitochondrial DNA alone
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D
Evidence from DNA extracted from sex chromosomes and autosomes
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Solution

The correct option is D Evidence from DNA extracted from sex chromosomes and autosomes
The evidence suggesting that humans are more closely related to chimpanzees than with other hominoids (old world tailless simian) apes are:
  • Adult human and baby chimpanzees skull is similar
  • The banding patterns of chromosome number- 3 and chromosome number- 6 of humans and chimpanzees are identical
  • 99% of genetic material in humans and chimpanzees are the same
  • ABO blood group series are present in both
  • Presence of menstrual cycle
  • Absence of tail
  • Presence of grasping hand

Thus DNA extracted from sex chromosomes and autosomes indicates that man is more closely related with chimpanzees than with other hominoid apes.

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