Context

A technique based on 'autosomal DNA' has been used for the first time to identify the great-grandson and closest living relative of Sitting Bull, a prominent 19th century Native American leader.

What is Autosomal DNA?

• Autosomal DNA is our non-gender-specific DNA.
• The technique searches for ‘autosomal DNA’ in the genetic fragments extracted from a body sample.
• The autosomal DNA technique can be used even when very limited genetic data are available, like in this case.
• It could be used in the future to identify living descendants of other long-dead historical figures.

The usual technique

• Usually, DNA techniques such as mitochondrial DNA, which means DNA passed from the mother or Y chromosome DNA passed down the male line, have been used in genetic searches.