Medical research

Sperm formation step could hold clues to male contraception

A cross-college collaboration is opening new doors in the study of male infertility by breaking down a key step in sperm formation. Isolating the intricacies of meiotic sex chromosome inactivation (MSCI), will now enable ...

Genetics

The Y-chromosome and its impact on digestive diseases

A major breakthrough in human genetics has been achieved with the complete decoding of the human Y chromosome, opening up new avenues for research into digestive diseases. This milestone, along with advancements in third-generation ...

Genetics

The sex of your cells matters when it comes to heart disease

Most mammals, including humans, have two sex chromosomes, X and Y. One sex chromosome is usually inherited from each parent, and they pair up as either XX or XY in every cell of the body. People with XX chromosomes typically ...

Diseases, Conditions, Syndromes

COVID-19 mortality rates higher among men than women

A new review article from Beth Israel Deaconess Medical Center (BIDMC) shows people who are biologically male are dying from COVID-19 at a higher rate than people who are biologically female. In a review published in Frontiers ...

Diseases, Conditions, Syndromes

Q&A: Is DNA key to whether you get COVID-19?

The strength and health of one's immune system is one key indicator of susceptibility to contracting pathogens, including the novel coronavirus. However, new evidence that may suggest more men get coronavirus than women has ...

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Sex-determination system

A sex-determination system is a biological system that determines the development of sexual characteristics in an organism. Most sexual organisms have two sexes. In many cases, sex determination is genetic: males and females have different alleles or even different genes that specify their sexual morphology. In animals, this is often accompanied by chromosomal differences. In other cases, sex is determined by environmental variables (such as temperature) or social variables (the size of an organism relative to other members of its population). The details of some sex-determination systems are not yet fully understood.

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