Jul 28, 2014 — The string of genes that make a man a man used to be much bigger, and some geneticists say it may be wasting away. Back off, others say. Y has been stable — and crucial — for millennia.
Jul 14, 2014 — You and your friends may have more than music and movies in common. Friends typically have more genetic similarities than strangers, researchers say. That may have evolutionary advantages.
Jul 10, 2014 — About half the genetic contribution to a child's reading ability also shapes how math-savvy she is, a big study of twins finds. But there's still no telling exactly which genes are involved.
Jul 7, 2014 — Last year the American Medical Association voted to recognize obesity as a disease. But what's in a name? Commentator Tania Lombrozo reviews new evidence that suggests it matters.
May 7, 2014 — DNA's instructions are written in a code of four molecular "letters," labeled A, C, T and G. For the first time, researchers have created and inserted two brand-new letters into a living cell.
Apr 14, 2014 — Scientists have figured out one reason women might be more vulnerable to Alzheimer's: A risk gene doubles women's chances of getting the disease but has minimal effect on men.
Mar 27, 2014 — Twenty years ago, many scientists didn't think that genes could cause diseases like cancer. The discovery of the BRCA gene for hereditary breast cancer changed that. Mary-Claire King tells how.
Mar 20, 2014 — Some people are more likely than others to gain weight from frequently indulging in fried foods, scientists say. You can blame Mom and Dad for passing on the obesity risk genes.
Feb 26, 2014 — A pregnant woman's blood contains enough fetal DNA for doctors to check whether the baby would be born with Down syndrome. A new blood test is safe and accurate, but it raises ethical concerns.
Feb 26, 2014 — Researchers say they can replace DNA in human eggs with genetic material from another woman to prevent devastating disorders in children. But big questions remain on safety and ethics.