Genetics

Recent news of complex embryo models revived debates over stem cells and human cloning. But biology says there’s nothing to worry about

Researchers investigate how to grow organs in animals using human stem cells

Getting blood vessels right in lab-grown and 3-D printed organs is still a challenge

Researchers explore using stem cells to treat age-related macular degeneration in real-life situations

Electricity within the body influences brain development in frog embryos

The DNA you shed everywhere could be used to identify you, and experts are concerned

The U.K.’s fertility regulator reveals that at least one child has been born using mitochondrial replacement therapy, but the procedure’s effectiveness remains to be seen

Hidden beneath the surface of the treasured strawberry is a unique branch of the evolutionary tree, where eight sets of chromosomes are better than two

When it comes to dog traits, genetics-based lineages are more telling than human-made categories

Genetic sequences show evidence of raccoon dogs and other animals at the Wuhan market sites where SARS-CoV-2 was found in early 2020, adding to evidence of a natural spillover event

A team of moth and butterfly scientists decided to go from a restaurant bar to the lab bench to understand mescal’s iconic “worm”

What really happens to our bodies when we age—and could we find a way to slow it down?