A part of a control region within the mitochondria of long-tailed ducks from east-Russia, Alaska and Canada had already been sequenced. The same area of the mitochondria was sequenced from long-tailed ducks from Maine, Iceland and Denmark and are here compared with each other and older sequences.
Hluti af stjórnröð í hvatberaerfðaefni hávella frá austur hluta Rússlands, Alaska og Kanada hefur áður verið raðgreindur og hér bætast við raðgreiningar frá Maine, Íslandi og Danmörku.