Tag: twist

Simple twist of DNA determines fate of placenta

The development of the mammalian placenta depends upon an unusual twist that separates DNA’s classic double helix into a single-stranded form, Yale researchers report July 15 in the journal Nature. The Yale team also identified the molecular regulator that acts upon this single strand to accelerate or stop placental development, a discovery with implications not

New findings add twist to screen time limit debate

Many parents want to know how much time their kids should be spending in front of screens, whether it’s their smartphones, tablets or TV. For years, the American Academy of Pediatrics had suggested a limit of two hours a day of TV for children and teens. But after screen time started to include phones and