What Role do Chiasmata Play in Chromosome Segregation?
Chiasmata are crucial for the correct segregation of homologous chromosomes during anaphase I of meiosis. The physical connection provided by chiasmata ensures that homologous chromosomes remain paired until they are pulled apart by the spindle fibers. This connection prevents non-disjunction, a condition where homologous chromosomes fail to separate properly, which can lead to disorders such as Down syndrome.
