significant of miosis
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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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-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.