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Define ‘oestrus’ and ‘menstrual’ cycles.

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Define ‘oestrus’ and ‘menstrual’ cycles.

Posted by Priya Rani 4 years, 3 months ago

CBSE > Class 12 > Biology

1 answers

Sia ? 4 years, 3 months ago

Oestrous cycle	Menstrual cycle
Species with oestrous cycles, females are generally only sexually active during the estrus phase of their cycle	In contrast, females species with menstrual cycles can be sexually active at any time in their cycle even when they are not about to ovulate
The oestrous cycle occurs in reptiles	The menstrual cycle occurs in mammals
The oestrous cycle is determined by FSH hormone	The menstrual cycle is determined by LH hormone
Oestrous cycles resorb the endometrium if conception does not occur during that cycle	Animals with menstrual cycles shed the endometrium through menstruation
The oestrous cycle is the reproductive system in most mammals where reproductive hormones cause the cycles to start after puberty in sexually mature females	The menstrual cycle is the regular natural change that occurs in the female reproductive system that makes pregnancy possible

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