H2ABbd
H2ABbd is a short tandem repeat (STR) DNA profile used in forensic science. It refers to a specific locus on the human genome that exhibits significant variation between individuals. This variation arises from the differing number of times a particular DNA sequence, the "repeat unit," is present at this locus. The sequence typically consists of two base pairs, hence the "H2" designation in its name, indicating a dinucleotide repeat. The "ABbd" part refers to the specific sequence of the repeat unit, which in this case is Adenine and Guanine followed by a variant form.
Forensic scientists analyze the length of this STR, which is directly proportional to the number of repeat