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10 points
TRISOMES is validvalid
TRISOME, an organism having one chromosome in addition to the usual diploid number [n]
TRISOME, a chromosome that occurs three times in a cell instead of twice, also TRISOMIC [n]
TRISOME, an organism having one chromosome in addition to the usual diploid number [n]
TRISOME, a chromosome that occurs three times in a cell instead of twice, also TRISOMIC [n]