Patrick's advice is very logical and I can attest to his prediction with F₁ species crosses. There is (relatively) little variation.
To your question, Tracey, I don't have an answer or a guess. But I have heard many times from breeders that their best finds in a lot is often "that one odd sibling" (of which there was none other like it). On the other hand, there is the seed that Della is raising from Paul's breeding, where all(?) siblings seem to be showing traits toward what the breeder intended.
