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Trisomy
(redirected from trisomic)

   Also found in: Dictionary/thesaurus, Medical, Wikipedia 0.01 sec.
trisomy [′trī‚sō·mē]
(cell and molecular biology)
The presence in triplicate of one of the chromosomes of the complement.

Trisomy 

the presence of one or a few nonhomologous extra chromosomes in the chromosome set of a diploid organism. Organisms (or cells) in which one, two, or more chromosomes present themselves as three homologues are called simple trisomics, double trisomics, and so forth. Trisomy is caused by the failure of chromosomes to separate (nondisjunction) during cell division. Some specific severe disorders are the result of trisomy occurring in specific chromosomes.



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The scientists found that inhibition of neurotransmitter GABA in trisomic mice can improve cognition and this could eventually be used in children.
Trisomic oocytes and a less efficient uterus have been identified as independent risks for older women (21).
If a trisomic individual is conceived, and if the trisomy is viable, the child may be born with a disorder such as Down's syndrome.
 
 
 
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