March 4 (UPI) --According to a new study, male mammals live shorter lives than their female peers as a result of sex chromosomes, not because of their risky behavior. When an international team of ...

According to popular theory, men live shorter lives than women because they take bigger risks, have more dangerous jobs, drink and smoke more, and are poor at seeking advice from doctors. But research ...

In animals, hybrid sterility and inviability between closely related species often affect only the heterogametic sex (XY). This widespread phenomenon, known as Haldane's rule, is an early speciation ...

New research has suggested that having two copies of the same sex chromosome offers protection and consequentially leads to a longer lifespan. Differences in lifespan between the sexes have been ...

According to popular theory, men live shorter lives than women because they take bigger risks, have more dangerous jobs, drink and smoke more, and are poor at seeking advice from doctors. But research ...

Sex linkage is the phenotypic expression of an allele that is dependent on the gender of the individual and is directly tied to the sex chromosomes. In such cases there is a homogametic sex and a ...