Constant or variable number of chiasmata during recombination?

Question

During recombination, is the number of chiasmata consistent for each gamete and are the chiasmata regions consistent within a single organism?

Answer 1

Hi There,

The number of chiasmata is highly variable between cell divisions and organisms . It depends on the chromosomal length as well as the susceptibility of a chromosomal region to recombination. There must be at least one chaismata per  chromosome for proper separation of homologous chromosomes during meiosis I.

Hope that helps,