Define genuine, I doubt there's a genuine anything these days.
Let's say DNA analysis defines it, at what point is purity acceptable? 85%? 95%? or is only 100%?
We had very good results with DNA analysis on our local bees and by direct comparison with the Amm colonies, you would never tell them apart.*
Certainly in tune with their environment, when others were reporting starving bees or worryingly low stores back in Spring, our colonies ticked over and required no emergency feeding When the season finally decided to improve, they took full advantage and brought in a stunning honey crop. One site with ten honey producers made 730+ lbs.
Winter feeding per hive consisted of twelve pints of invert, some thymol emulsion added plus Ivy.
Winter treatment applied in September, OA strips. No mid Winter treatment.
Temperament very good.
Every year without fail, I am humbled by these beautiful creatures and what they manage to achieve.
* Correction, the one noticeable difference was mite drop. None of the colonies have high drops but the Amm were always higher.
Spot the difference ....