Human biological sex is determined by the sex chromosomes X and Y. In most cases, females possess two X chromosomes, while males have one X and one Y. However, there is some evidence that the Y ...

Human biological sex is determined by the sex chromosomes X and Y. In most cases, females possess two X chromosomes, while males have one X and one Y. However, there is some evidence that the Y ...

X and Y chromosomes determine not only the sex ... depending on whether you are male or female. Since females have two X chromosomes, one may be expressed, or manifest in the phenotype, and ...

But the Trump administration’s recent guidance to “restore biological truth” on gender determination misses on both ...

Researchers found that a gene on the Y chromosome influences how aortic valve stenosis progresses differently in males and ...

Scientists at the University of Virginia have discovered that as men age, they often lose the Y chromosome in some of their ...

Isodicentric Y chromosomes are generated during sperm production through aberrant crossing over between opposite arms of a palindrome. At left is two copies of the normal Y chromosome, each ...

Researchers have shed new light on how a type of heart valve disease—aortic valve stenosis—progresses differently in males and females. The research paves the way for treatments that can be tailored ...

The X and Y chromosomes, commonly referred to as the sex chromosomes, are one such pair. They determine the biological sex, reproductive organs, and sexual characteristics that develop in a person.