Question

write the significance of meiosis

Answer 1

SIGNIFICANCE OF MEIOSIS...........

Due to this no. of chromosome are halved in parent cells.....

Meiosis is responsible for continuing the race of generation.....

Meiosis help in the formation of the gametes

Due to the crossing over in prophase I genetic variations occur......



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Answer 2

Answer:

Significance of meiosis:

• Chromosome number is halved in gametes (sex cells), so that on fertilization, the normal number (2n) is restored.

• It provides for mixing up of genes which occurs in two ways :

      (i) The maternal and paternal chromosomes get mixed up during the first (reduction) division as they seperate from the homologous pairs.

     (ii) While the maternal and paternal chromosomes are seperating, the chromatid material very often gets exchanged between the two members of a homologous pair. This is known as crossing over which results in genetic recombination.