August 28, 2024: A new study has revealed that human Y chromosome may disappear in a few million years. Y chromosome is crucial to determine the sex of human and as it is degenerating.

In humans, females have two X chromosomes and males have a single X and a puny little chromosome called Y. The X contains about 900 genes that do all sorts of jobs unrelated to sex.

Y contains few genes and a lot of non-coding DNA and it also contains an all-important gene that kick starts male development in the embryo.

When compared with Platypus, XY pair is just an ordinary chromosome, with two equal members. This suggests the mammal X and Y were an ordinary pair of chromosomes not that long ago.