单词	non-disjunction
释义	non-disjunction /ˌnɒndɪsˈdʒʌnkʃ(ə)n / noun [mass noun] Genetics The failure of one or more pairs of homologous chromosomes or sister chromatids to separate normally during nuclear division, usually resulting in an abnormal distribution of chromosomes in the daughter nuclei.Although this assay is very sensitive for detecting chromosomal loss, it is unable to detect non-disjunction and chromosome gain.... In principle, non-disjunction during spermatogenesis could lead to aneuploidy, which might cause fetal death. Although the non-disjunction of chromosome 21 in cultured lymphocytes was reported to be increased by age, there was no age or sex effect on chromosome 21 micronucleation in healthy persons.
随便看	nakhoda nakhuda Nakib nakodo nakohdo naksatra nakshatra Nakuran Nakuru nala nalbuphine Nalchik naled Nalgo N.A.L.G.O. nalidixic acid Nalline nalorphine naloxone naltrexone Nam 'Nam Nama namacush namad

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