In genetics, a chiasma (pl.: chiasmata) is the point of contact, the physical link, between two (non-sister) chromatids belonging to homologous chromosomes. At a given chiasma, an exchange …

: a cross-shaped configuration of paired chromatids visible in the diplotene stage of meiotic prophase and considered the cytological equivalent of genetic crossing-over. New Latin, X …

2023年8月3日 · Chiasmata (singular: chiasma, from the Greek, meaning “X-shaped cross”) is the point of contact that occurs in the Prophase I pachytene phase and links two non-sister …

2025年1月12日 · Chiasma is a process involving the exchange of genetic material between homologous chromosomes during meiosis. This genetic recombination results in genetic …

Chiasmata are X-shaped points of attachment between two non-sister chromatids of a homologous pair. Chiasmata form as a result of crossing over and hence non-sister …

chiasma (pl., chiasmata): Point of physical exchange of equal segments of adjacent nonsister chromatids during the bivalent stage of meiosis.

Chiasmata are specialized chromatin structures that link homologous chromosomes together until anaphase I (Figs. 45.1 and 45.10). They form at sites where programmed DNA breaks …

2024年5月21日 · A chiasma is a point of contact between sister chromatids that forms during meiosis, a process of cell division and replication used by a wide variety of organisms. At the …

Anatomy. a crossing or decussation, as that of the optic nerves at the base of the brain. Cell Biology. a point of overlap of paired chromatids at which fusion and exchange of genetic …

in genetics, the points at which members of a chromosome pair are in contact during the prophase of meiosis and because of which recombination, or crossing over, occurs on …