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.

What they found was that every neuron’s genome was unique. Each had more than 1,000 point mutations (mutations that alter a single letter of the genetic code), and only a few mutations appeared in ...

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 ...

"It's striking to see cancer-like mutations happening silently and at low levels in the cells of perfectly healthy women," said lead senior author Dr. Samuel Aparicio, a professor of pathology and ...