Question

Explain how, offspring and parents of organisms reproducing sexually have the same number of chromosomes.

Answer 1

Answer:

In sexually reproducing organisms male and female gametes/ reproductive cells with only half the number of chromosomes (as in the parent cell) are produced. During fertilization, when male and female gametes fuse to give rise to a zygote, original number of chromosomes are restored.

Answer 2

I will explain you in other question because it is too big explanation