-->

Our Environment

Question
CBSEENSC10014662

How do organisms, whether reproduced asexually or sexually maintain a constant chromosome number through several generations? Explain with the help of suitable example.

Solution

The chromosome number has to be maintained in all the organisms. For this the asexual and sexual reproduction maintain a constant chromosome number by adopting different methods. 
In asexual reproduction the organisms divide the chromosome first and then the cells. For example in binary fission the chromosomes are replicated and then tranfered to the daughter cells. 
In case of sxual reproduction, gametes are formed which are haploid in nature and then unite to restore the normal diploid condition . Thus , mainataining the chromosome number in the organism.  For example in humans the male and the female gamete carry 23 chromosomes. They unite to form zygite which restores the normal 46 chromosome number in the offspring.