I have come to the conclusion that my family do not have any DNA in common with some of those on the reference panel.
Therefore, our ethnicity estimates will not be in any way accurate until the Reference Panel changes to include some of those we share DNA with.
I have no idea how it is concluded that my Dad has Scottish ethnicity, as none of his lines lead anywhere near Scotland. Do they just guess or extrapolate if there is no common DNA to cover a certain percentage?
This page explains how the Reference Panel is comprised of 56,5800 people, not a very large sample, I would have thought -
https://www.ancestry.com.au/cs/dna-h...city/estimates