Question

significant of miosis​

Answer 1

Answer:

Miosis is a persistent constriction of the pupil due to excessive constriction of the sphincter muscle of the iris, or paralysis of the dilator pupillae muscle. ... a lesion of the trigeminal nerve, in connection with the sympathetic system of the iris.

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Answer 2

-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.