Help with assigning gender could one day be at hand for intersex individuals whose genital phenotypes and sex chromosomes don't match, thanks to the discovery of a stable sex hormone signature in our ...

Two new studies of the evolutionary history of the Y chromosome show that, contrary to popular (if not scientific) belief, the male is not at risk of dying out. The Y chromosome which, among other ...

New research led by Professor Yogesh Dwivedi at the University of Alabama at Birmingham uncovers how long noncoding RNAs engage chromatin-silencing machinery under glucocorticoid receptor activation, ...

Arthur P. Arnold is professor in the Department of Integrative Biology and Physiology, University of California, Los Angeles, California, USA. Sabra L. Klein is professor in the W. Harry Feinstone ...

Key points Over 99% of people are unambiguously male or female: hormones, physiology, and chromosomes align. Intersex disorders are usually the result of excess androgens in females or insufficient ...

It has long been known that viral infections can be more severe in males than females, but the question as to why has remained a mystery -- until possibly now. Researchers have found that female mouse ...

For the first time, researchers identified sex-based differences in genetic expression of human pulmonary microvascular endothelial cells (HPMECs). Results from a study published in Physiological ...

Experts have long known that women are at a greater risk of developing Alzheimer’s disease. They’re twice as likely to be affected as men. Now scientists say they may be on their way to understanding ...

On average, human males tend to be about 5 inches (13 centimeters) taller than females. But why? In short, we're not sure. Even though this sex-linked height difference exists across the world, we ...

Most people assume that our genes determine the characteristics that make males and females distinct from each other: sex organs, secondary sex characteristics, personality, behavior, and even ...