A gene that affects the brain's dopamine system appears to have influenced mothers' behavior during a recent economic downturn, researchers say.
At the beginning of the recession that began in 2007, mothers with the "sensitive" version of a gene called DRD2 became more likely to strike or scream at their children, the researchers say. Mothers with the other "insensitive" version of the gene didn't change their behavior.
Originally published on Thu August 8, 2013 3:04 pm
Scientists say commercial production of cultured beef could begin within 10 to 20 years.
Credit David Parry / PA Wire
After three months, $330,000 and a high-profile media blitz, the world's first hamburger grown in a lab made its worldwide debut Monday.
The unveiling of "cultured beef," as the burger is branded, was a production worthy of the Food Network era, complete with chatty host, live-streamed video, hand-picked taste testers, a top London chef and an eager audience (made up mostly of journalists). Rarely has a single food gotten such star treatment.
Biologists normally look for the hellbender slamander, which is known by the nickname "snot otter," under rocks in streams. But now there's a gentler way: They can take water samples and look for traces of the animals' DNA.
If you want to protect rare species, first you have to find them. In the past few years, biologists have developed a powerful new tool to do that. They've discovered that they can often find traces of animal DNA in streams, ponds — even oceans.
The idea took root just five years ago, when biologists in France found they could detect invasive American bullfrogs simply by sampling pond water and looking for an exact genetic match to the frogs' DNA.
Chemistry, genetics and computing give us clues to understand cancer cells.
Sometimes a drug hits cancer hard. Sometimes the cancer cells are unfazed. But it's often hard to know which outcome to expect.
A group of scientists at the National Cancer Institute has spent the last three years turning some mathematical algorithms loose on giant sets of data to better understand the relationship between cancerous cells and cancer drugs.
Mary Sullivan, seen here in a photo displayed at a 2000 news conference, was the final victim of the Boston Strangler, officials said Thursday. They plan more DNA tests on the evidence.
Credit William Plowman / AP
The Boston Strangler's final victim has been identified, according to police who say DNA tests have linked Albert DeSalvo, who confessed to being the serial killer, to the death of Mary Sullivan in 1964. The authorities will exhume DeSalvo's body to get "a biological sample" that might provide a 100 percent match.