Question

How the number of chromosomes remain constant in an organism?

Answer 1

there are 23 pairs of chromosome.. which are constant..
The chromosome number is kept constant from generation to generation because of process of mitosis and meiosis.
While mitosis is equational division which ensures the chromosome number remains same in somatic cells, meiosis is reductional division which takes place in reproductive cells.
The chromosome number is reduced to half in the gamete cells so that fertilization restores it back to the original number. 


hope helped..

Answer 2

Answer:

The count of chromosomes in mother and father and offspring of a type of species always remains constant because at the time of the formation of gamete, in the process of meiosis the chromosomes are getting halved.

Meiosis is a process of division, where the division of cells happens two times and forms four cells. The genetic substances present in the newly formed cells will be half of the materials present in the cells of the mother.

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