DNA is the blueprint of life. Genes encode proteins and serve as the body's basic components. However, building a functioning organism also requires precise instructions about when, where, and how much those components should be produced.

The man leading the investigation into Nancy Guthrie's apparent abduction is hopeful that DNA evidence discovered at the 84-year-old's Tucson, Ariz. , home could lead to an arrest.

Only a few years ago, Tuesday’s announcement that a glove believed to be connected to the disappearance of Nancy Guthrie in Tucson, Arizona, had no match to a DNA database would have been a dead end.

For the first time, researchers have succeeded in developing an artificial DNA base pair that is based on a different chemical force than natural genetic material. While the common natural DNA building blocks are held together by hydrogen bonds,

"How is this guy a Pit Bull????” the dog owner said in a viral Threads post.

A DNA expert believes the kidnapper "will be identified” through investigative genetic genealogy after an unknown person's DNA was recovered at Nancy Guthrie's home.

A man was convicted this month in the murder of a 13-year-old girl in 1982.

Authorities are analyzing biological evidence in the search for Nancy Guthrie nearly three weeks after Savannah Guthrie's mom was last seen.