They can also appear spontaneously during the replication of DNA. Mutations generally fall into two types: point mutations and chromosomal aberrations. In point mutations, one base pair is changed.

That point mutation in TKTL1 means that the Neanderthal version of the protein has a lysine where the modern human version has an arginine. After conducting experiments with fetal human neocortex ...

How do mutations happen, and how do they influence the future of a species? Molecules of sickle-cell hemoglobin stick to one another, forming rigid rods. These rods cause a person's red blood ...

Dr. Marwan G. Fakih explains that KRAS mutations, found in 45% of patients with colorectal cancer, include the rare KRAS G12C mutation, leading to Lumakras approval.