The number of chromosomes in parents and offsprings of a particular species undergoing sexual reproduction remains constant due to the:

These are the options for the question :The number of chromosomes in parents and offsprings of a particular species undergoing sexual reproduction remains constant due to the:

(a) doubling of chromosomes after zygote formation. (b) halving of chromosomes after zygote formation. (c) doubling of chromosomes before gamete formation. (d) halving of chromosomes at the time of gamete formation.

The correct answer is -The correct answer is -