In human genetics and genetic genealogy, autosomal DNA refers to the twenty-two chromosome pairs that make up the human autosome.
Archaeogenetics it the formal study of archaeology (ancient history) using genetics and DNA testing of ancient DNA samples.
Ancient DNA (aDNA) comes from grave sites that predate the modern era. It can be considered to include forensic DNA samples.
An ancestry-informative marker is an autosomal DNA SNP or an X-chromosome DNA SNP that is geographically restricted in its frequency.
The ancestral allele (sometimes called Ancestral SNP or Wildtype Allele) is the version of a genetic trait that is believed to be the original value.
An ancestral haplotype is believed haplotype (haploid genotype) of a common ancestor to a group of people.
An affected relative pair are two organisms (human, cat, dog, chicken, etc.) that share the same trait.
An allele is one of a set of possible values for a genetic trait or variant.
Adenine is one of the four nucleobases that make up our DNA.
Y-Chromosome SNPs (Y-SNPs) are prefixed with names assigned to them by research groups.