XYY syndrome - Wikipedia
XYY syndrome ... XYY syndrome, also known as Jacobs syndrome and Superman syndrome, is an aneuploid genetic condition in which a male has an extra Y chromosome. [1] There are …
47,XYY Syndrome (Jacobs Syndrome): What It Is & Symptoms
Dec 5, 2024 · 47,XYY syndrome (Jacobs syndrome) is a rare condition in which males have an additional Y chromosome in their genetic code.
XYY Syndrome: What Is It, Causes, Diagnosis, and More | Osmosis
Feb 4, 2025 · What is XYY syndrome? XYY syndrome, also known as Jacobs syndrome, is a chromosomal disorder characterized by the presence of an extra Y chromosome (47, XYY). …
Jacobs Syndrome - StatPearls - NCBI Bookshelf
Sep 10, 2024 · 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 …
XYY Syndrome | Male Chromosome Disorder
Oct 3, 2012 · Search for detailed information on rare diseases, including NORD's authoritative Rare Disease Reports and data from other reliable sources. Interested in exploring the …
47,XYY syndrome: MedlinePlus Genetics
Two of the 46 chromosomes, known as X and Y, are called sex chromosomes because they help determine whether a person will develop male or female sex characteristics. Females typically …
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XYY - Unique
How do we know about XYY? If most boys and men with XYY are never diagnosed, how do we know about the impact of the extra Y chromosome?
XYY Syndrome - Dayton Children's Hospital
Boys typically have one X chromosome and one Y chromosome, or XY, but boys with XYY syndrome have an extra Y chromosome, or XYY. XYY syndrome is not caused by anything …
XYY Syndrome | Nemours KidsHealth
Boys typically have one X chromosome and one Y chromosome, or XY, but boys with XYY syndrome have an extra Y chromosome, or XYY. XYY syndrome is not caused by anything …
What Are YY Chromosomes? When Superman Syndrome Occurs - WebMD
Apr 28, 2025 · Learn about the formation of YY chromosomes and what kinds of physical characteristics and symptoms are associated with XYY syndrome.