Animal breeding has traditionally focused on improving mean trait performance; however, contemporary research increasingly highlights the significance of genetic variation not only in trait means but ...

Twin studies can help geneticists determine whether some trait or condition is caused by the environment, or by genetics. Since identical twins carry basically the same genome, if a trait is due to ...

Most clinicians still underestimate the degree to which genetic factors shape personality traits and personality development. This is not controversial within behavioral genetics, but it remains ...

Aspirin, genetics and colon cancer To illustrate the effect gene-environment interactions have on disease, let's consider the example of aspirin use and colon cancer. In 2001, researchers at the Fred ...