UNIPARENTAL DISOMY
\jˈuːnɪpˌe͡əɹəntə͡l dɪsˈɒmi], \jˈuːnɪpˌeəɹəntəl dɪsˈɒmi], \j_ˈuː_n_ɪ_p_ˌeə_ɹ_ə_n_t_əl d_ɪ_s_ˈɒ_m_i]\
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The presence in a cell of two paired chromosomes from the same parent, with no chromosome of that pair from the other parent. This chromosome composition stems from non-disjunction (NONDISJUNCTION, GENETIC) events during MEIOSIS. The disomy may be composed of both homologous chromosomes from one parent (heterodisomy) or a duplicate of one chromosome (isodisomy).
By DataStellar Co., Ltd
