People who have one of several well-documented medical conditions do not have only XX or XY chromosomes, which typically correspond with female and male sexes, respectively. Those conditions include ...

Gene editing techniques may eventually allow trisomy to be treated at the cellular level, according to an in vitro proof-of-concept study. Down syndrome is caused by the presence of a third copy ...

A recent Trump executive order defines sex based on gamete size. But the order oversimplifies genetics, hormones and reproductive biology.

Ordinarily we have 46 chromosomes, 23 from our mother and 23 from our father. Of these, 44 are autosomes and 2 are sex chromosomes. A person's sex is determined by the X and Y chromosomes with males ...

Chromosomes are cellular structures that contain the genetic material. A chromosome is comprised of a single DNA molecule that may be either circular or linear. The full complement of a cell s ...

Especially coupled with enhanced technology, there are several things we were taught as kids that turned out to be completely ...

In their effort to answer a decades-old biological question about how the hepatitis B virus (HBV) is able to establish ...

“It is the policy of the United States to recognize two sexes, male and female.” “‘Female’ means a person belonging, at ...

Each cell of the human body contains two meters of DNA. The whole secret lies in the intricate three-dimensional arrangement that allows DNA strands to be efficiently organized and compacted within ...

Muscular dystrophy is a disease caused by a genetic mutation. The muscles of muscular dystrophy patients weaken.. | Genetics ...

Drinking water may help reduce cardiovascular disease (CVD) risk, while excessive coffee and tea intake (≥6 cups/day) ...

哈佛医学院神经病学副教授蕾切尔·巴克利 (Rachel Buckley，未参与相关工作)表示，有证据显示X染色体上的基因可助预防痴呆，其他基因则会增加认知能力下降的风险。《自然》新研究揭示了一个可能塑造X染色体影响力的潜在因素。