Here’s how it works. Scientists have discovered a gene variant that could make some parents more likely to have girls than boys. In the new study, researchers analyzed the genomes of around ...

The instructions for activating or repressing a gene are encoded in the genome, and each type of cell has its own genomic ‘language’ that is based on highly complex patterns of nucleotides ...

By Gina Kolata Photographs by Kenny Holston Gina Kolata visited Kendric Cromer and his parents for the third time as she has followed his gene therapy at Children’s National Hospital in ...