2024年12月5日 · 47,XYY syndrome (Jacobs syndrome) means you have an extra Y chromosome. It often goes undiagnosed due to a lack of obvious symptoms. But the syndrome is associated …

2024年9月10日 · Jacobs syndrome, also known as 47,XYY syndrome, is a rare genetic condition that occurs in about 1 out of 1000 male children; this condition belongs to a group of …

47,XYY is not inherited; it usually occurs as a random event during the formation of sperm cells. An incident in chromosome separation during anaphase II (of meiosis II ) called nondisjunction …

47,XYY syndrome is characterized by an extra copy of the Y chromosome in each of a male's cells. Explore symptoms, inheritance, genetics of this condition.

47,XYY syndrome is caused by genetic mutations, also known as pathogenic variants. Genetic mutations can be hereditary, when parents pass them down to their children, or they may …

About 1 in 1,000 boys have it. Boys with XYY syndrome — also known as 47,XYY — might be taller than other boys. Other symptoms can include problems with spoken language and …

2012年10月3日 · A diagnosis of XYY syndrome is made based upon a thorough clinical evaluation, a detailed patient history, and specialized tests (i.e., chromosomal analysis) that …

2017年6月7日 · Males with XYY syndrome have 47 chromosomes because of the extra Y chromosome. This condition is also sometimes called Jacob’s syndrome, XYY karyotype, or …

2025年2月4日 · XYY syndrome, also known as Jacobs syndrome, is a chromosomal disorder resulting from an extra Y chromosome (47, XYY). It often manifests with above-average …

47,XYY, sometimes referred to as “Jacob’s syndrome,” affects about 1 in 1,000 males. This variation may produce a wide array of symptoms. Learn more.