As a quick follow up to my earlier post using ancestry.com’s “Genetic Census of America”, I thought I’d post some more heat maps using the data I aggregated by major continental group (“race”) and by the more granular “adjusted” European ethnicities (i.e., whereby I simply divide the ethnicity by the total european “ethnicities” in the state).
Note: You can click these images for an interactive view to see the actual numbers for each state if you care.
Adjusted European Ethnicities
Continental Groups (no adjustment)
[Note: These values here were all well below 1 percent and openheatmap rounds to the nearest integer, so I multiplied these by 100 to show the small absolute variance in more detail]
Please note that the low levels of subsaharan African ethnicities and american indian ethnicity in ancestry.com’s data implies that blacks and latinos, in particular, are very much under-represented based of their share of the population. I would presume that this is because blacks and latinos are much less likely to use AncestryDNA (and probably genealogy services in general).
Below I very crudely estimated their share of the population based on the proportions of American Indian (~40% average for Latinos) and subsaharan african (~80% average for blacks) genetic material, assuming no admixture with other groups (which obviously is not quite right either).
I am not claiming that these figures are exactly right or uniform in all states (I know there is real variance, especially with hispanics/latinos), but it ought to be pretty clear that they are using the service at something like 20-50% the rate of non-hispanic whites, or at least were at the time ancestry.com compiled this “census” (which is why I felt more comfortable using my crude adjustment method to calculate the European percentages!).