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CBSE - X - Biology

what are omosomes? expalin how in sexually reproducing organism the number of chromosomes in the progeny is maintained ?

Asked by Sne 16th March 2017, 11:35 AM
Answered by Expert


Hi Sneha,

chromosome is a DNA molecule with part or all of the genetic material (genome) of an organism. 

In sexually reproducing organisms, the gamete formation involves meiosis that reduces the number of chromosomes to half. But the chromosome number gets doubled again after the fertilisation of gametes to form zygote. In this way, chromosome number is maintained in sexually reproducing organisms.

Answered by Expert 16th March 2017, 5:37 PM

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