Deep within the cells of mice, a genetic arms race is unfolding between X and Y chromosome genes, battling for dominance in ...

In evolutionary terms, fitness is defined as an organism's ability to survive and reproduce its genes into the next ...

In evolutionary terms, fitness is defined as an organism's ability to survive and reproduce its genes into the next generation.

While this internal rivalry is usually hard to see, it becomes clearer when it involves genes on the X and Y chromosomes, ...