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?

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 ...