Given that physicians typically advise couples with a proven chromosome issue to continue trying to conceive normally, the value of parental chromosome testing is debatable. (verywellfamily.com)
Recombination during meiosis results from programmed DNA breakage, subsequent DNA repair, and the formation of crossovers — a specific DNA repair product that exchanges DNA between parental chromosomes. (mdanderson.org)
In meiosis, which is required in sexual reproduction, one diploid cell (having two instances of each chromosome, one from each parent) undergoes recombination of each pair of parental chromosomes, and then two stages of cell division, resulting in four haploid cells (gametes). (fossilmuseum.net)