The increased risk of several types of cancer in Klinefelter syndrome (47XXY) suggests that the extra X chromosome may be involved in the tumorigenesis associated with this syndrome. Here, we show ...

With such an unstable composition, the Y chromosome is at risk of disappearing over multiple generations. Males tend to only have one copy of the Y chromosome, ...

The Y chromosome in primates — including humans — is evolving much more rapidly than the X chromosome, new research on six primate species suggests. For instance, humans and chimpanzees share ...

A few millennia could see disappearance of the Y chromosome, researchers say. July 17, 2009— -- What makes a man a man? Socially, that is a complicated question. Genetically, however, it is ...

A nearly gapless genome sequence of the echidna, an egg-laying mammal with multiple sex chromosomes, helps researchers to ...

The human Y chromosome, responsible for determining male sex, finally has gotten an end-to-end examination. The Y chromosome is the smallest of the human chromosomes. “In the old time, people ...

The Y chromosome can disappear over time in human males, which may introduce a number of health problems. While the exact trigger for such degeneration is unknown, environmental factors can play a ...

The Y chromosome can disappear over time in human males, which may introduce a number of health problems. While the exact trigger for such degeneration is unknown, environmental factors can play a ...

Each chromosome holds genes that, when “switched on,” produce proteins to do work inside of cells. You might expect that women, with two copies of X, would make twice as many X proteins as men do.