Single nucleotide polymorphisms (SNPs) are the most common types of genetic variation among people.
Women who have a minor variation in a particular gene may increase their odds of a twin pregnancy if they smoke.
The largest genome-wide study of its kind has determined how much five major mental illnesses are traceable to the same common inherited genetic variations.
In a pair of papers, a Brown University epidemiologist shows how integrating different kinds of genomic data could improve studies of the association between genes and disease.
A genetic trait known to make some people especially sensitive to stress also appears to be responsible for a 38 percent increased risk of heart attack or death in patients with heart disease.