Meiosis is advantageous than mitosis as it produces variations

cbse
cellcycle

#1

Meiosis is advantageous than mitosis as it produces variations so plays important role in
evolution. What are the stages during which chances of recombination of genes are increased during meiosis? Explain these events.


#2

Stages during which recombination of genes occurs in meiosis are
(i) Crossing over is exchange of genes between the non-sister chromatids of homologous
chromosomes. It occurs at recombination nodules during pachytene stage of prophase-I of meiosis-I arid is regulated by recombinase enzyme.
(ii) Arrangement of-bivalents at the equator o.f the spindle duringmetaphase-I of meiosis.