crossing over

Show Summary Details

Quick Reference

The exchange of genetic material between homologous chromosomes by breakage and reunion. This occurs during pairing of chromosomes at meiosis, and in some organisms (e.g. certain fungi, and insects such as Drosophila) may also occur at mitosis. The temporary joins between chromosomes during crossing-over are called chiasmata.

Subjects: Biological Sciences.

Reference entries

See all related reference entries in Oxford Index »

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.