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disomic
(redirected from Disomy)

   Also found in: Medical, Encyclopedia, Wikipedia 0.04 sec.
disomic [daɪˈsəʊmɪk]
adj
(Life Sciences & Allied Applications / Genetics) Genetics having an extra chromosome in the haploid state that is homologous to an existing chromosome in this set
disomy  n


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Chromosome 21 disomy in the spermatozoa of fathers of children with trisomy 21 in a population with a high prevalence of Down syndrome: increased incidence in cases of paternal origin.
In a smaller number of cases, the syndrome is the result of uniparental disomy in which the maternal contribution to chromosome 15q is replicated, replacing the paternal contribution (Knoll, Nicholls, Magenis, & Graham, 1989).
Because uniparental disomy is rare, Malcolm says, these parents can be assured that the syndromes "would be unlikely to recur.
 
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