May 27, 2021 · Learn about the formation of YY chromosomes and what kinds of physical characteristics and symptoms are associated with XYY syndrome.

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]

Dec 5, 2024 · 47,XYY happens when there’s an extra Y chromosome in your genetic code. This change happens before birth and can occur in one of two ways: A sperm cell carries an extra Y chromosome and fertilizes an egg at conception. This is the most common form. Cells divide atypically during early fetal development — embryonic development, specifically.

Feb 13, 2023 · Also known as Jacobs syndrome, XYY karyotype, or YY syndrome, it is a rare genetic condition that occurs when a male is born with an extra Y chromosome.

The Y chromosome contains a "male-determining gene," the SRY gene, that causes testes to form in the embryo and results in development of external and internal male genitalia. If there is a mutation in the SRY gene, the embryo will develop female …

Jan 15, 2020 · Superman syndrome, also known as 47, XYY, is a condition classified as a chromosomal aneuploidy (which is an abnormality in chromosome structure and/or number) in which males have an additional...

YY1 is a ubiquitously distributed transcription factor belonging to the GLI-Kruppel class of zinc finger proteins. The protein is involved in repressing and activating a diverse number of promoters. Hence, the YY in the name stands for "yin-yang."

Sep 10, 2024 · Jacobs syndrome is a rare genetic abnormality in which a male receives an extra Y chromosome from his father.

Recent whole-genome and transcriptome analyses of Y chromosomes in humans and other primates, in Drosophila species as well as in plants have shed light on the current gene content of the Y, its origins and its long-term fate.

Jan 21, 2021 · Two Y chromosomes are present in a chromosomal abnormality known as XYY or Jacob’s syndrome, however, only YY chromosomes in a genome aren’t reported to date. X and Y chromosomes are two genetic material repositories significantly important for humans.