Which of the following events occur if fertilisation do not takes place.

Secretion of progesterone hormone increase

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Secretion of estrogen hormone stops

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Uterus inner wall layer and unfertilised egg will shed off

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Uterus inner wall increased and unfertilised egg will shed off

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Solution

The correct option is C Uterus inner wall layer and unfertilised egg will shed off
If the egg is fertilised by a sperm as it travels down the Fallopian tube, then pregnancy occurs.
But if the egg does not because fertilised, then the lining of the uterus (endometrium) is shed during ht mensuration.
Hence, the uterus inner wall and unfertilised egg will shed off if no fertilisation occurs.

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