Question

how is the chromsomes number obtain over generations​

Answer 1

Explanation:

When these male and female gametes fuse to form the zygote, the DNA is restored to the normal complement and thus the chromosome number is maintained over generations.

Answer 2

Answer:

when these male and female gametes fuse to form the zygote ,the DNA is resorted to the normal complement and thus the Chromosome number is obtained over generations.