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Two species cannot remain in same place according to

  • A.Allen's law
  • B.Gause hypothesis
  • C.Doll's rule
  • D.Weismann's theory

Answer: B

Gause hypothesis

The Gause hypothesis, the competitive exclusion principle, says that two species with the same niche cannot live in the same place. Allen's law is about limb length in cold climates, Dollo's rule is about irreversible evolution, and Weismann's theory is about germ plasm.

The other options, Allen's law; Doll's rule; Weismann's theory, are not the answer to this question. This agrees with the official final answer key for the paper, which gives option B.

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