Study of gay brothers may confirm X chromosome link to homosexuality
A genetic study of 409 pairs of brothers supports a controversial hypothesis.
Gene-editing revives hopes for transplanting pig organs into people
CRISPR method destroys potentially harmful DNA sequences at 62 sites in the pig genome.
Scientists to build human genome from scratch
The Human Genome Project–Write (HGP-write) aims to synthesize entire genomes from their chemical components.