Q. 264.0( 3 Votes )
What would be the consequences if there is no meiosis in organisms that reproduce sexually? (AS2)
Answer :
a) Organisms reproducing sexually undergo reduction division to form gametes which are haploid i.e., they contain half the number of chromosomes than their parents.
b) This is to ensure that when the 2 gametes fuse to form a zygote, the original chromosome number is restored in the organism and the species remains constant.
c) If meiosis does not take place, the ploidy will double with every other fertilization leading to disruption or imbalance in the number of chromosomes causing many harmful changes, some of which can be fatal for the growing zygote
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