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 …

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 …

: 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 …

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 …

2023年5月29日 · Chiasma. ChiasmaThe point of contact between paired chromatids during meiosis, resulting in a cross-shaped configuration and representing the cytological …

CHIASMA meaning: 1. an instance of two structures in the body crossing and forming an X, especially the optic…. Learn more.

Chiasma (plural: chiasmata): structures shaped like the Greek letter χ (usually Romanized as chi but pronounced “kai”) that form between non-sister chromatids Non-sister chromatids: …

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 …

2018年5月18日 · chiasma (pl. chiasmata) In genetics, a cross-shaped structure forming the points of contact between non-sister chromatids of homologous chromosomes, first seen in the …

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

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 …

2004年7月26日 · X-shaped configuration seen in tetrads during the latter stages of prophase 1 of meiosis. They represent physical crossovers between DNA molecules.

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 …

Chiasmata (singular: chiasma) are the physical points of crossover or exchange between paired homologous chromosomes during the prophase stage of meiosis. This crossover event, …

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 …

2022年9月16日 · Chiasmata are specialized chromatin structures that link homologous chromosomes together until anaphase I (Figs. 45.1 and 45.10). They form at sites where …

1994年7月1日 · Chiasmata and Chromosome Segregation Chiasmata have long been recognized to be a regular feature of meiosis, and eventually we have come to agreement about their …

The point of contact between paired chromatids during meiosis, resulting in a cross-shaped configuration and representing the cytological manifestation of crossing over like the letter X. …

The chiasma is a structure that forms between a pair of homologous chromosomes by crossover recombination and physically links the homologous chromosomes during meiosis. Chiasmata …