Here's what to know about the DNA evidence collected so far in the investigation into Savannah Guthrie's missing mother and what results are pending.

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.

Previously released footage and photos from Nancy’s home security cameras showed a masked suspect carrying what appears to be a gun in a holster around their waist. According to Kreutz, officials have presented local gun shop owners with “a list of names and photos” to try to identify the weapon and its “unusual holster.”

You find yourself pulled into a case that keeps unfolding with new evidence. Investigators from the Pima County Sheriff’s Department and the FBI recovered DNA at Nancy Guthrie’s Tucson property that does not match her or anyone in close contact with her,

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.

Advanced DNA testing using genealogy databases could take weeks or months to identify Nancy Guthrie's abductor after initial FBI database search failed.

Authorities said they're looking into genetic genealogy in the massive investigation into Nancy Guthrie's mysterious abduction.

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 new study has analyzed mummified remains of cheetahs in Saudi Arabia caves. The results could help reintroduce cheetahs to the Arabian Peninsula, researchers say.