New Y chromosome might be in decline, but men are here to stay; Here’s why

The Y chromosome, crucial for determining male sex in humans, is slowly disappearing, raising concerns about future male offspring. A recent study offers hope, revealing that the spiny rat, a rodent species in Japan, evolved a new male-determining gene after losing its Y chromosome. This discovery suggests humans might also adapt similarly, potentially preventing species extinction. However, this evolutionary change could lead to the formation of new species with distinct sex-determining mechanisms.