Question

What is chaismata??
State it's function

Answer 1

Cell Cycle and Cell Division. Chiasmata is the X-shaped structure formed due to the point of contact between paired chromatids during meiosis. It is the point representing the crossover where the homologous chromosomes are joined to each other. Significance.- At chiasmata crossing overoccurs in pachytene stage.

Answer 2

In genetics, a chiasma (pl. chiasmata) is the point of contact, the physical link, between two (non-sister) chromatids belonging to homologous chromosomes. At a given chiasma, an exchange of genetic material can occur between both chromatids, what is called a chromosomal crossover, but this is much more frequent during meiosis than mitosis.In meiosis, absence of a chiasma generally results in improper chromosomal segregation and aneuploidy.