👤 whose
Whose work first linked the human sex chromosome condition XXY to Klinefelter syndrome?
Human BiologyGenetics
Quick Answer
Harry Klinefelter described the syndrome in 1942, and later cytogenetics showed the common XXY chromosome pattern. It is one of the best-known sex chromosome aneuploidies.
The Full Story
Harry Klinefelter and colleagues described a syndrome in 1942 characterized by small testes, infertility, and gynecomastia. In the 1950s, cytogenetic studies showed that many affected individuals have an extra X chromosome, giving the XXY pattern. This established Klinefelter syndrome as a chromosomal condition rather than simply a clinical syndrome. It remains an important example in medical genetics.
Key Facts
1.Klinefelter syndrome was described in 1942
2.The common karyotype is XXY
3.It affects male sexual development and fertility
YouTube Angle
Suggested video title for this topic:
"How doctors discovered the XXY chromosome condition"