Why the 'wimpy' Y chromosome hasn't evolved out of existence

The Y chromosome has shrunken drastically over 200 million years of evolution. Even those who study it have used the word 'wimpy' to describe it, and yet it continues to stick around. An Opinion paper outlines a new theory -- called the 'persistent Y hypothesis' --t o explain why the Y chromosome may be more resilient than it first appears.

from Top Health News -- ScienceDaily https://ift.tt/3kdw81z