4 Stories

How Tough Childhoods May Lead to Premature Aging

Kids may appear to bounce back from life stressors, but their bodies tell a different story

(Newser) - Children appear to be highly susceptible to the stress of trauma on a biological level, according to a study published in the Proceedings of the National Academy of Sciences . US and Canadian researchers led by Eli Puterman of the University of British Columbia have been studying the length of telomeres,... More »

Ancient Virus Could Determine the Sex of Your Baby

'Why ... is a fascinating question'

(Newser) - The sex of baby mice—and quite likely baby humans—is determined by a virus that inserted itself into the mammalian genome 1.5 million years ago, Live Science reports. Yale researchers published their surprising findings on March 30 in Nature . According to a press release , more than 40% of... More »

X Chromosome Actually Looks Nothing Like an X

It's more like a lumpy blob of spaghetti

(Newser) - Here's your fun fact for the day: Contrary to popular belief, the X chromosome isn't shaped like an X at all—something that scientists have actually long been aware of. What they haven't known, however, is what that shape is ... until now. Per a paper published in... More »

Researchers Find Cancer 'Fingerprints'

Rearranged chromosomes can be used to ID tumors, personalize treatment

(Newser) - Scientists have developed a new, more accurate method of tracking specific cancers using genetic “fingerprints”— the unique way every cancer rearranges chromosomes. Those rearrangements can be pinpointed with new genetic sequencing methods, allowing doctors to follow the cancer’s trail in the blood. The breakthrough is a key... More »

4 Stories