What glossary definitions help with understanding 47,XYY syndrome?
atypical ; cell ; cell division ; chromosome ; embryonic ; hypotonia ; involuntary ; karyotype ; learning disability ; mosaicism ; motor ; motor skill ; muscle tone ; nondisjunction ; reproductive cells ; sex chromosomes ; spectrum ; sperm ; stature ; syndrome ; tic ; tremor You may find definitions for these and many other terms in the Genetics Home Reference Glossary. See also Understanding Medical Terminology.