We first performed a supervised ADMIXTURE (14) analysis, modeling British and Irish clusters of interest as a mixture of 3 sources, England, ‘Wales’ (N Wales and S Wales), and Norway (Fig. 3A). These sources approximately represent Celtic (Wales), Saxon (England), and Norse (Norway). We observe the highest Norwegian ancestry in the Northern Isles clusters (mean 18%, maximum 23%), which agrees well with estimates by Leslie et al. (4). Norwegian ancestry is lower in the Hebrides (7%), and is substantially lower in the north of Scotland (N Scotland) and southwest (Argyll), and the Isle of Man, averaging 4%, little more than other parts of mainland Scotland. We estimate that Norwegian (as well as Danish/Swedish) ancestry is also markedly low in Ireland (average 7%) compared with previous estimates (8, 9) (we explore this further in Discussion). The majority of ancestry in our tested clusters is modeled as the Welsh ancestral component, reflecting a common “Celtic” ancestry across Scotland and Ireland. The eastern Scottish clusters Aberdeenshire and Tayside-Fife present more English-like ancestry. Isle of Man similarly presents relatively high (42%) English ancestry.
Разделили на три источника - кельтский (валийский), саксонский (англ) и североскандинавский (норв.)
Результат на картинке и в тексте - не треть, меньше - 18-23 - показали сев острова. Ну и дальше цифры по тексту по регионам.