Question

describe acharastetic features of pachetene stage of prophase of meiosis 1​

Answer 1

$\huge\mathfrak{Answer- }$

$\red{Pachytene\: Stage: }$

⭐It is the third stage of prophase I which occurs after zygotene.

⭐ Synapsed chromosome continue to become thick and short. The chromatids of homologous chromosomes appear as tetrad.

⭐ The most important step i.e., crossing over takes place where the exchange of genetic material between the non-sister chromatids of the homologous chromosomes occurs.

⭐ An enzyme-mediated process called recombination takes place. An enzyme recombinase is involved during this phase.

⭐ By the end of pachytene, the recombination between the homologous chromosome is complete and the two chromatids are linked at the site of crossing over.

Answer 2

✔The most important step i.e., crossing over takes place where the exchange of genetic material between the non-sister chromatids of the homologous chromosomes occurs.