The mice with the mutation needed less sleep than normal mice.

VOA: special.2009.08.26

People who have this mutation need less sleep than others.

VOA: special.2009.08.26

"When Darwin first proposed his theory in eighteen fifty-nine, he had no concept of a gene, no concept of a chromosome, no concept of mutation, and certainly no concept of things like DNA and RNA."

VOA: special.2009.12.01