Most people have 46 chromosomes in each cell. In males, this typically includes one X chromosome and one Y chromosome (XY). XYY syndrome is a genetic condition that occurs when a male has an extra ...

‌Although genetics are hereditary, a phenomenon in genetic alterations occurs when male babies receive an extra Y chromosome in each of their cells, resulting in an XYY combination. The syndrome is ...

The first five above are the most common physical exam findings. However, because these characteristics can fall within the normal range for males, often those with XYY syndrome do not get diagnosed.

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 Y ...

Former model turned novelist Annabel Giles, 49, married Midge Ure, 55, the lead singer of pop band Ultravox, in 1986. They separated in 1991 and have one daughter, Molly, now 21. Annabel's second ...

STUDIES of human chromosomes have been greatly facilitated by the development of newer technics, particularly peripheral blood leukocyte culture. 1–3 Many abnormalities have been described, most of ...

A microscopic piece of genetic material known as the Y chromosome made headlines last week. It is nothing new or rare; every man has one in practically every cell, or he would not be a man. But a few ...

When news breaks, you need to understand what actually matters — and what to do about it. At Vox, our mission to help you make sense of the world has never been more vital. But we can’t do it on our ...

The XYY Man is a 1976–77 British crime thriller television series created by Kenneth Royce, based on his novel series about reformed cat burglar William 'Spider' Scott, recruited by British ...