Genetics

Scientists identify genetic components of left-handedness

For the first time, scientists have pinpointed regions of human DNA that closely relate to whether people are right- or left-handed. They also linked these regions to language-related features in the brain. New research pinpoints the genes associated with left-handedness. Previously, scientists knew that genes were responsible for around 25% of handedness. However, before the […]

Genetics

What is an MTHFR mutation?

Methylenetetrahydrofolate reductase, or MTHFR, is an enzyme that breaks down the amino acids homocysteine and folate. The MTHFR gene that codes for this enzyme has the potential to mutate, which can either interfere with the enzyme’s ability to function normally or completely inactivate it. People have two MTHFR genes, inheriting one from each of their […]