Pete and All,
 The genetics works well in a lab but not easy in the natural world. I have tried a little bit of everything over the years. I even pulled my own queens from nuc's with a queen producer in California.  That was a learning experience for me. Brood patterns were very different within that operation. So I thought about the beekeepers that were going to get the lower quality queens.
I believe genetics has a place in any breeding program. It is very hard to stay on track after the first generation in nature.
Best Regards
Roy Nettlebeck

PS: Years ago I spent a week with Steve Taber on the subject. Nothing has changed.

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