Biology as Poetry: Genetics

Bacteriophage Ecology Group

Trisomy

Aneuploidy consisting of a single extra chromosome.

Trisomies are referred to as trisomies because with the extra chromosome a cell contains three copies of a single homologue.

Human trisomies include Down syndrome (trisomy 21) and Klinefelter syndrome (XXY) as well as trisomy X and XYY.

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