Hidden battle of X, Y chromosome sperm in mice determined by contest for proteins
Researchers have uncovered that the molecular arms race between sperm bearing X and Y chromosome in mice is dependent on their competitive binding to Spindlins proteins.
As per Charles Darwin’s theory of evolution, fitness is an organism’s ability to survive and pass on its genes better suited to its environment to future generations. Sometimes, Darwin’s theory also applies to genes within the same body, which compete to assert dominance. While this internal rivalry is usually hard to see, it becomes clearer when it involves genes on the X and Y chromosomes, which determine the sex of mammals.