BioScience Dictionary

 
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Found Klinefelter syndrome 2 times.

Displaying results 1 to 10.

1. Klinefelter syndrome (XXY trisomy)
A genetic syndrome in many mammals caused by the presence of an extra X chromosome in the male (normally XY) karyotype . In humans, this syndrome is characterized by small testes, feminine appearance, sterility (except in the case of genetic mosaics) and possibly mental retardation. In domestic cats, male calicos always have this genetic condition.

2. Klinefelter syndrome
In humans, a genetically determined condition in which the individual has two X and one Y chromosome. Affected individuals are male and typically tall and infertile.