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Bio. Ch. 12.2
Bio. Ch. 12.2 Terms
Terms | Definition |
---|---|
trisomy 21 | condition in which an individual has three number 21 chromosomes, resulting in Down syndrome |
Down syndrome | general set of symptoms in people with trisomy 21 |
nondisjunction | event during meiosis in which homologous chromosomes or sister chromatids fail to separate |
duplication | change to a chromosome in which part of the chromosome is repeated |
deletion | change to a chromosome in which a fragment of the chromosome is removed |
inversion | change to a chromosome in which a fragment of the original chromosome is reversed |
translocation | change to a chromosome in which a fragment of one chromosome attaches to a nonhomologous chromosome |
transposon | genetic element that moves from one location to another in a genome |