A Q-tip, a tissue and a pizza crust ...

Authorities said they're looking into genetic genealogy in the massive investigation into Nancy Guthrie's mysterious abduction.

Traditionally, genetic disorders have been classified as monogenic (involving one gene) or complex (involving many genes and their interaction with each other and the environment). The identification ...

WASHINGTON — Two-thirds of animal and plant populations are declining in genetic diversity, which makes it harder to adapt to environmental changes, according to new research published in the journal ...