nondisjunction
71tetrasomic — Relating to a cell nucleus in which one chromosome is represented four times while all others are present in the normal number. [tetra + chromosome] * * * tet·ra·so·mic .te trə sō mik adj having one or a few chromosomes tetraploid in otherwise… …
72loss of heterozygosity — (LOH) loss of the allele from one chromosome of a pair, as by deletion, nondisjunction, mitotic recombination, or suppression of function, so that the locus is converted from heterozygosity to homozygosity or hemizygosity; it is often associated… …
73Aneuploidie — Aneuploidie, Hinzufügung (Hyperploidie) oder Entfernung (Hypoploidie) einzelner Chromosomen aus dem Genom aufgrund von Genommutationen. A. kommt durch Unregelmäßigkeiten bei der Mitose oder Meiose zustande (z.B. Nondisjunction). Trisomie ist das… …
74Down-Syndrom — Down Syndrom, durch Trisomie (⇒ Aneuploidie) des Chromosoms 21 des Menschen hervorgerufenes Krankheitsbild. Dieses zeigt sich in einer schweren geistigen Behinderung, schräg stehender Lidfalte, kurzem Hals und kurzfingrigen Händen. Diese Symptome …
75non-disjunction — (n.) also nondisjunction, 1913, from NON (Cf. non ) + DISJUNCTION (Cf. disjunction). Related: Non disjunctional …
76nonseparation — n. absence of division, lack of severance, nondisjunction …
77disjunction — n. the separation of pairs of homologous chromosomes during meiosis or of the chromatids of a chromosome during anaphase of mitosis or meiosis. Compare: nondisjunction …
78reduction division — noun (genetics) cell division that produces reproductive cells in sexually reproducing organisms; the nucleus divides into four nuclei each containing half the chromosome number (leading to gametes in animals and spores in plants) • Syn: ↑meiosis …
79trisomic — I. (ˈ)trī|sōmik adjective Etymology: tri + somic : having one or a few chromosomes triploid in otherwise diploid nuclei usually because of nondisjunction II. noun ( s) : a trisomic individual …
80nondisjunctional — adjective see nondisjunction …
