aneusomic chromosomal part gained aneusomic chromosomal segment Such additions of translocated chromosomal parts confer a trisomic condition to the duplicated region of the chromsome, and are thus considered to be 'variant single locus complements' in virtue of an abnormal number of features at a particular genomic location, rather than abnormal sequence within the location. translocated duplicate chromosomal element duplicate partial aneuploid chromosomal element translocated duplicate chromosomal segment A part of some non-homologous chromosome that has been gained as the result of an unbalanced translocation event. exploratory term