The majority of fertilized eggs die and are resorbed into the body. ZEISS Microscopy/Flickr, CC BY-SA As an evolutionary biologist whose career has focused on how embryos develop in a wide variety of ...

This week, the world met the woolly “mammouse”—a genetically engineered mouse with woolly mammoth hair. The scientists at Colossal Biosciences who created it think it’s a promising step toward their ...

While many hail the ruling, critics fear mutant creatures may result. Sept. 13, 2007 — -- Last week, Britain made a landmark decision that allows researchers to use animal eggs in the creation of ...

In a quiet lab at Cornell University, scientists have made a discovery that could reshape how we think about life’s earliest stages. Researchers found that male and female embryos begin developing ...

An international team of scientists led from Sweden's Karolinska Institutet has for the first time mapped all the genes that are activated in the first few days of a fertilized human egg. The study, ...

Putting the uniquely human version of a certain gene into mice changed the way that those animals vocalized to each other, suggesting that this gene may play a role in speech and language. Mice make a ...

In a few decades, gene-editing technologies could reduce the likelihood of common human diseases. Societies must use this time to prepare for their arrival. Read the paper: Heritable polygenic editing ...

Cornell researchers have uncovered the genetic triggers that cause male and female bovine embryos to develop differently, as early as seven to eight days after fertilization. The breakthrough in basic ...