disjunction

(redirected from disjunctions)
Also found in: Dictionary, Thesaurus, Encyclopedia.
Related to disjunctions: Inclusive disjunction

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

(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.

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.
References in periodicals archive ?
N.: "The negation of conjunctions, conditionals, and disjunctions" in Acta Psychologica 151, 2014, pp.
(iii) (~(a [disjunction] b)) [equivalent to] ((~ a)[conjunction] ~ b)(the second de Morgan's law--negation of disjunction),
Kim's famous rejoinder is that if, say, pain is identical with a disjunction of several physical types, then why cannot pain, according to the principle of the indiscernibility of identicals, be itself considered a disjunction of several types?
But the four disjunctions now require the yet further step of calling together not one but a set of such teams of scholars from the world's major centers of Catholic learning in a uniquely broad network.
At the same time, it accounts for the difference between an instance of excluded middle and a disjunction such as 'Either there will be a sea battle tomorrow or it will rain tomorrow'.
In order for every disjunction to be 'hidden' from view, only one option is left and it means thinking the unthinkable: adopt the WHO data only for the first year of life.
Thus, it is predicted that in LU and UU disjunctions, the more likely (least surprising) element will determine the probability assigned to the disjunction with the less likely (more surprising) element exerting no direct influence.
Note that the set of constraints [Delta]*, constructed according to Definition 5, is equal to the set of constraints specified by arbitrary finite disjunctions of negative literals (including the empty disjunction).
If the family of atomic factors exists in the class of factors F then any factor f in F can be viewed as a disjunction of some subset of [Pi].
The purpose of this article is to study the use of disjunctions in analysis of programs with higher-order functions and recursive data structures and in particular to develop a program analysis framework for a language with these features where disjunctive properties are modeled exactly.
Briefly, disjunctive Datalog is a variant of Datalog where disjunctions may appear in the rule heads; advanced versions also allow for negation in the bodies, which can be handled according to a semantics for negation in disjunctive logic programming.