Study shows Y chromosome is stable

Contradictory to previous theories, the Y chromosome is not in danger of becoming extinct, or lessening in strength. Although it is diminuitive as compared to the X chromosome, new importance has been found in the Y chromosome, and that it has stabilized over millions of years.

Background:

Researchers See New Importance in Y Chromosome [New York Times]

Reprieve for Men: Y Chromosome Is Not Vanishing [Scientific American]

Men Are Here to Stay, Thanks to the Y Chromosome's Indestructible Genes [The Wire]