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Home  >>  JEEMAIN and AIPMT  >>  Biology  >>  Reproduction
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Choose the odd one out : (on the basis of oestrous and menstrual cycle)

( A ) cows
( B ) human
( C ) monkeys
( D ) apes
Can you answer this question?

1 Answer

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(A) is the right answer.

In non-primate mammals like cows, sheep, rats, deers, dogs, tiger, etc., such cyclical changes during reproduction are called oestrus cycle where as in primates (monkeys, apes, and humans) it is called menstrual cycle. Many mammals, especially those living in natural, wild conditions exhibit such cycles only during favourable seasons in their reproductive phase and are therefore called seasonal breeders. Many other mammals are reproductively active throughout their reproductive phase and hence are called continuous breeders.
answered Apr 4, 2014 by pady_1

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