Women above the age of 50 (generally)unable to give birth to child. Explain the reason for the same

Explanation:

Their ability of producing the woman's sex cell is destroyed, now they can not produce eggs and their menstrual cycle is also stopped known as menopause.

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.

i dont know it at allnow im just getting points at this pint