Nature and nurture both determine how likely you are to develop a particular disease. Hiroshi Watanabe/DigitalVision via Getty Images Sitting in my doctor’s examination room, I was surprised when she ...

From Mendel’s pea plants to today’s genome mapping, our understanding of genetics has transformed how we see heredity, traits, and evolution. DNA’s code, once mysterious, now reveals a complex ...

Genetic inheritance may sound straightforward: One gene causes one trait or a specific illness. When doctors use genetics, it’s usually to try to identify a disease-causing gene to help guide ...