Question

State significance of Meiosis.

Answer 1

Answer:

• Meiosis is responsible for the formation of sex cells or gametes that are responsible for sexual reproduction.
• It activates the genetic information for the development of sex cells and deactivates the sporophytic information.
• It maintains the constant number of chromosomes by halving the same. This is important because the chromosome number doubles after fertilization.
• In this process independent assortment of maternal and paternal chromosomes takes place. Thus the chromosomes and the traits controlled by them are reshuffled.
• The genetic mutation occurs due to irregularities in cell division by meiosis. The mutations that are beneficial are carried on by natural selection.
• Crossing over produces a new combination of traits and variations.

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Answer 2

Answer:

Significance of meiosis

• Responsible for development of variations due to crossing over.
• It is responsible for gamete formation in different organisms except plants.
• Meiosis is also responsible for the maintenance of number of chromosomes in different generations.