How does meiosis contribute to variation?

Contribution of meiosis to variation

• Production of unique gametes by crossing over between homologous chromosomes separates linked gene at metaphase I of meiotic division.
• When the homologous pairs of chromosomes line up in metaphase I, each pair lines up independently from the other pairs.
• A third source of genetic diversity occurs during meiosis II, in which the sister chromatids separate and are randomly distributed to the daughter cells, the gametes. Crossing over in meiosis I leads to non-identical chromatids in meiosis II chromosomes

Please Subscribe to promote this website. Subscription is free

Share with a friend

Thank you so much