A descendant is someone who descends from a specific ancestor. For example, your children and grandchildren are your descendants.

Derived State

The derived state of an allele is the changed (mutated) condition of the allele that differs from the ancestral state. See also: Ancestral State

Deoxyribonucleic Acid (DNA)

DNA, deoxyribonucleic acid, is the genetic code that makes each of us a unique individual. Humans inherit about one half of their genetic code from each of their parents. Our genetic code then holds the [...]


A deletion is when one or more of the letters (nucleotides) of your genetic code is deleted.