XYY syndrome, also known as Jacobs syndrome, is an aneuploid genetic condition in which a male has an extra Y chromosome. [1] There are usually few symptoms. [2] These may include being taller than average and an increased risk of learning disabilities. [1] [2] The person is generally otherwise normal, including typical rates of fertility. [1]

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 with an increased risk of certain diagnoses and physical traits. Treatment mainly addresses any physical, mental health or behavioral issues that develop.

2012年10月3日 · XYY syndrome is a rare chromosomal disorder that affects males. It is caused by the presence of an extra Y chromosome. Males normally have one X and one Y chromosome.

2017年6月7日 · XYY syndrome is a genetic condition that occurs when a male has an extra copy of the Y chromosome in each of their cells (XYY). Sometimes, this mutation is only present in some cells. Males...

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 height, acne during adolescence, mild developmental delays, and learning disabilities.

What Is XYY Syndrome? XYY syndrome is a genetic condition found in males only. About 1 in 1,000 boys have it. Boys with XYY syndrome — also known as 47,XYY — might be taller than other boys.

2023年4月21日 · XYY syndrome (Jacobs syndrome or 47,XYY) is a genetic condition that occurs when a person assigned male at birth is born with an extra copy of the Y chromosome in some or all of their cells. Males are usually born with one X and one Y chromosome.