1.

Distinguish between Menstrual and Oestrous cycle.

Answer»
Menstrual cycleOestrous cycle
1. It occurs only in primates. Occurs in most of the mammals.
2. Menstruation occurs at the end of cycle. Menstruation does not occur.
3. Endometrium goes out with menstrual flow.Endometrium is reabsorbed.
4. Copulation can be any time of year.Copulation occurs only when female in oestrous or heat period.



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