Genetic genealogy encompasses three principle types of genetics. One is Y-DNA that is carried by the male line, another is mitochondrial DNA carried and passed by the female line to all her children, and autosomal DNA. This section focuses on autosomal DNA which includes all 23 of your chromosomes. Autosomal DNA is useful in finding both male and female relatives, which is especially helpful when a female marries and changes her surname. Articles of general interest will be posted here.