disjunction

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disjunction

 [dis-junk´shun]
the act or state of being disjoined. In genetics, the moving apart of bivalent chromosomes at the first anaphase of meiosis.

dis·junc·tion

(dis-jŭnk'shŭn),
The normal separation of pairs of chromosomes at the anaphase stage of meiosis I or II.
[dis- + L. junctio, a joining, fr. jungo, pp. junctum, to join]

disjunction

/dis·junc·tion/ (-junk´shun)
1. the act or state of being disjoined.
2. in genetics, the moving apart of bivalent chromosomes at the first anaphase of meiosis.

craniofacial disjunction  Le Fort III fracture.

disjunction

(dĭs-jŭngk′shən)
n.
1. The act of disjoining or the condition of being disjointed.
2. Logic
a. See exclusive disjunction.
b. See inclusive disjunction.
3. Genetics The separation of homologous chromosomes during meiosis.

disjunction

[disjungk′shən]
Etymology: L, disjungere, to disjoint
the separation of paired homologous chromosomes during anaphase of the first meiotic division, or the separation of the chromatids of a chromosome during anaphase of mitosis and the second meiotic division. Compare nondisjunction.

dis·junc·tion

(dis-jŭngk'shŭn)
The normal separation of pairs of chromosomes at the anaphase stage of meiosis I or II.
The normal separation of pairs of chromosomes at the anaphase stage of meiosis I or II.
[dis- + L. junctio, a joining, fr. jungo, pp. junctum, to join]

disjunction

The separation movement of members of pairs of chromosomes to opposite poles of a cell in the process of cell division.

disjunction

the separation of HOMOLOGOUS CHROMOSOMES to opposite poles during anaphase of nuclear division, particularly MEIOSIS. Abnormalities in disjunction (see NONDISJUNCTION can lead to a chromosomal mutation in which daughter cells possess too many or too few chromosomes. In humans extra AUTOSOMES can result in severely abnormal individuals (see DOWN'S SYNDROME, PATAU SYNDROME, EDWARDS'SYNDROME). See also TURNER'S SYNDROME and KLINEFELTER'S SYNDROME for disjunction abnormalities affecting the SEX CHROMOSOMES.

disjunction

the act or state of being disjoined. In genetics, the moving apart of bivalent chromosomes at the first anaphase of meiosis.