The discrepancy between you and your Dad is puzzling if you used same company

[wishstar]

According to Ancestry I am 43% Italian/Greek, 0% Iberian and 0% N. African and 2% Ashkenazi. That company does not distinguish between Italian and Greek DNA as the populations were so intermixed. However when I put my DNA on My Heritage, they said I was 27% Greek, 16% Iberian, 9% Ashkenazi, 6% N African and 0% Italian. Family Tree DNA was kind of in between but they do not break down Italy and Greek, just show Southern European in their analysis. I have found original records establishing both of my 2 Italian grandparents' ancestry back to over 300 years ago in southernmost tip of Italy that was colonized much earlier by Greeks so is understandable that some DNA companies would show Italy/Greek and the other Greek.

Makes no sense though that your company would have not found any Greek ancestry for you while showing 65% for your Dad unless their method of analysis was handled differently for each of you or had changed.

I have several cousins who have tested on Ancestry and all our results are consistent with each other and match up with what we know about our ancestry. Although I think Ancestry is usually quite accurate, their testing only shows me as 3% Irish while I have well documented Irish ancestry of over 12% so their results are certainly just approximations and not completely accurate.