Medical research

Mom's, not dad's, mitochondria create healthy embryos

Mammal embryos shed paternal mitochondria within days of fertilization, perhaps to ensure the offspring a healthy life, a new study shows. Researchers from the California Institute of Technology will present their findings ...

Medical research

Solving a mitochondrial mystery

When it comes to mitochondrial inheritance, maternal genes rule the day at the expense of paternal ones. But why?