Q. 765.0( 2 Votes )

The number of chromosomes in parents and off springs of a particular species remains constant due to :
A. doubling of chromosomes after zygote formation

B. halving of chromosomes during gamete formation

C. doubling of chromosomes after gamete formation

D. halving of chromosomes after gamete formation

Answer :

The gametes have half number of chromosomes as compared to that normal body cells. Reduction division (meiosis) takes place during gamete formation which halves the number of chromosomes in both male and female gametes. The original chromosome number (as in parent) is restored after fertilisation in sexual reproduction.

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