Lactase Persistence Study Offers Look at Past Migration, Pastoralism in Africa | GenomeWeb

NEW YORK (GenomeWeb News) – The ability to continue digesting the milk sugar lactose in adulthood — enabled by ongoing expression of the lactase enzyme — seems to have spread across Africa through a combination of convergent evolution and past population movement, an international team reported today.

The resulting lactose tolerance patterns coincide with a rise in pastoralism and cattle domestication in various parts of the continent, and the lactose-related alleles found in present-day populations are revealing past human migrations and interactions.

Get the full story

This story is free
for registered users

Registering provides access to this and other free content.

Register now.

Already have an account?
Login Now.

In Cell this week: transcriptional map of human embryo development, circadian clock genes in acute myeloid leukemia, and more.

The US National Academy of Sciences has announced 84 new members and 21 foreign associates.

The users of file-sharing site Sci-Hub work all around the globe where research is going on, Science's John Bohannon reports.

Researchers link obesity in Labrador retrievers to a deletion in their POMC gene.