Researchers at the Crick have uncovered which genes on the Y chromosome regulate the development of sperm and impact ...

From the moment of conception, your baby has the genetic information to become a boy or girl — but because both sexes start out the same in the womb, you're going to have to wait to find out that info ...

Females (XX) carry twice as many X-linked genes on their sex chromosomes as males (XY). How do cells control gene expression to manage this potentially lethal dosage problem? A prime example of X ...

Boys who have XYY syndrome are born with it. It's called XYY because they have an extra Y chromosome in most or all their cells. Usually, a person has 46 chromosomes in each cell, divided into 23 ...

A study conducted by a research team at the Crick Institute identified important genes on the Y chromosome that regulate ...

Imagine you look in mom’s cell-free DNA and you find a bunch of Y chromosomes. The baby will be a boy, right? If you don’t see any Y chromosomes, a girl. Similarly, a fetus with Down Syndrome ...

The Science of Fraternal Twins Mixed-gender twins are the most common type of fraternals, some 50 percent are boy-girl. To understand this combination: Males have XY chromosomes, females have XX ...

Boys who have Klinefelter syndrome are born with it. It's also called XXY because they have an extra X chromosome in most or all their cells. Usually, a person has 46 chromosomes in each cell, divided ...

Boys are three times more likely to be diagnosed ... risk factors for autism may be linked to the Y chromosome. Autism ...

A chromosome is a single, long molecule of DNA. These highly organized structures store genetic information in living organisms. Small sections of the chromosome, called genes, code for the RNA ...

Researchers have uncovered which genes on the Y chromosome regulate the development of sperm and impact fertility in male mice. This research could help us understand why some men don't produce ...