chromosome y

So far, we have always attributed the Y chromosome to the symbol of masculinity. But it turns out this type of chromosome is not as strong and durable as we imagined.

At one point in the past, the number of men declined to only 1:17 women. What happened?

The DNA of a caveman virus that lived 1.5 million years ago could block the X chromosome, increasing the male sex ratio in the fetus.

Men with an older brother are more likely to become gay and the cause of the problem is formed before birth.

Most sperm are malformed, men still have the ability to pillow and give birth if only one testicle, sperm also degenerate with age ... are things you may not know.

Through mouse experiments, US scientists found that males can still reproduce even though most genes are removed on the Y chromosome.