Question

Answer the following questions :
1. what do you mean by menstrual cycle?
2. what are X and Y ? how do we determine the sex of a child with the help of these chromosomes?
3. write a short note on 'egg laying animals.'
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Answer 1

Answers :

1. The menstrual cycle is the hormonal process a woman's body goes through each month to prepare for a possible pregnancy.

2. The X and Y chromosomes, also known as the sex chromosomes, determine the biological sex of an individual: females inherit an X chromosome from the father for a XX genotype, while males inherit a Y chromosome from the father for a XY genotype (mothers only pass on X chromosomes).

3.Oviparous animals are animals that lay their eggs, with little or no other embryonic development within the mother.