Crossing Over


ninja icon


•  Crossing over is the exchange of DNA material between non-sister homologous chromatids

•  Crossing over produces new combinations of alleles on the chromosomes of the haploid cells

When chiasmata form between bivalents in prophase I, DNA can be exchanged between non-sister homologous chromatids

This exchange of genetic material is called crossing over and produces new allele combinations on the chromosomes

These chromosomes that consist of genetic material from both homologues are called recombinant chromosomes

Crossing over results in new combinations of alleles in haploid cells and thus increases the genetic diversity of potential offspring

Forming Recombinant Chromosomes via Crossing Over

Crossing over

Overview of Meiotic Recombination

meiotic crossover