Chiasma (genetics) Crossing over during meiosis, with chiasma shown. In genetics, a chiasma (pl.: chiasmata) is the point of contact, the physical link, between two (non-sister) chromatids …

Aug 24, 2025 · A chiasma (plural: chiasmata) is a point of contact between two non-sister chromatids belonging to homologous chromosomes. It physically links these chromosomes …

Aug 3, 2023 · 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 …

The meaning of CHIASMA is an anatomical intersection or decussation.

an instance of two structures in the body crossing and forming an X, especially the optic chiasma (= the connection in the brain between the two optic nerves that connect the eyes to the brain …

Other articles where chiasma is discussed: heredity: Simple linkage: Furthermore, Morgan perceived that the chiasmata (crosses that occur in meiotic chromosomes) indicate the …

The point at which paired homologous chromosomes remain in contact as they begin to separate during the first prophase of meiosis, forming a cross shape. A number of chiasmata can …

Chiasma refers to a cross-shaped structure observed between non-sister half-chromosomes or chromatids during meiosis, corresponding to the site of crossing-over.

A chiasma (plural: chiasmata) is the visible, X-shaped connection formed between homologous chromosomes during meiosis. It represents the site where non-sister chromatids exchange …

chiasma in American English (kaɪˈæzmə ) noun Word forms: plural chiasmata (kaɪˈæzmətə ) Origin: ModL < Gr chiasma, a crosspiece < chiasmos, placing crosswise < chiazein, to mark …