What is the significance of the existence of the male Y chromosome?

Women and men are different in many ways, but they have the same genome

Women and men usually have many differences in morphology, physiology and behavior

"Our experiments have shown that both autosomes and sex chromosomes X and Y may contain genetic variants that are important for sex dimorphism, but the Y chromosome alone can change the size of the sex difference by as much as 30%

However, the evolution of dimorphism in both sexes depends not only on the position of genetic variation in the genome, but also on how natural selection and sexual selection act on it

"The most dramatic change in gender dimorphism is an increase of 50% in just ten generations.

"What kind of genetic variation is combined with different forms of selection is a powerful way to test the evolutionary determinants of gender differences

More information about the experiment

In their research, the researchers determined the genetic structure of male and female body types by creating a large lineage of more than 8,000 beetles (the seed beetle Callosobruchus maculatus)

Original search:

Rapid evolution of sexual size dimorphism facilitated by Y-linked genetic variance

DOI 10.