Battle of the sex chromosomes: How competition affects X vs. Y sperm fitness

In evolutionary terms, fitness is defined as an organism’s ability to survive and reproduce its genes into the next generation. Genes influence fitness, sometimes competing against each other within an organism. In evolutionary terms, fitness is defined as an organism’s ability to survive and reproduce its genes into the next generation. Genes influence fitness, sometimes competing against each other within an organism. Evolution Molecular & Computational biology Phys.org – latest science and technology news stories