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a
all mammals
b
only primates
c
all mammals except human females
d
mammalian females other than primates
answer is D.
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Detailed Solution
In non-primate mammals like cows, sheep, rats, deers, dogs, tiger, etc., such cyclical changes during reproduction are called oestrus cycle.Menstrual cycle is present in female of primate mammals such as human, apes and old world monkeys.