Question

it is seemed that chromosome number is 16 in zygote embryonal cells as well as adult of a particular organism. justify

Answer 1

It is true that the chromosome number remains the same in the zygote stage, in the embryonal cells, and also in the adult stage of a particular organism. This is because of cell division processes like meiosis and mitosis.

Meiosis is the type of cell division which occurs during gametogenesis. In this type of cell division, the chromosomes divide in such a way that their number gets halved in the gametes.

When fertilization takes place, the number of chromosomes in the gametes becomes equal to the number of chromosomes present in the somatic cells. After fertilization occurs, the rest of the growth stages will have mitosis occurring in the cells.

Therefore, the number of chromosomes remains consistent through the stages of the zygote, embryonal cells, and the adult stage.