Down’s syndrome is one of the most common chromosomal abnormalities that affects approximately 1 in 1,000 to 1 in 1,100 live births worldwide, according to the World Health Organization. It presents a ...

Klinefelter syndrome is a genetic abnormality that affects only males. People with Klinefelter syndrome may not have any symptoms. If they do, the symptoms (including enlarged breasts, a small penis, ...

Down syndrome happens when a baby gets an extra copy of chromosome 21. More than 200,000 people in the United States live with Down syndrome. Typical health issues for people with Down syndrome ...

Klinefelter syndrome is the most common sex-chromosome disorder; it affects approximately one in every 660 men. This syndrome is characterized by the presence of one or more extra X chromosomes, and ...

The formation of new genes is a primary driving force of evolution in all organisms. How exactly do these new genes crop up in an organism’s genome and what must occur in order for them to be passed ...