[quote=Warthog]While line\inbreeding is effective in fixing traits, it isn't the only way to go about it. Assortative mating can have the same results albeit perhaps in more generations.[/quote]Absolutely! :D Thanks for pointing that out. My post is far from an attempt to cover all aspects of breeding. I just wanted to point out that "linebreeding" (and obviously incestuous inbreeding) without rigorous culling really is insufficient - in the long run. But you're right, breeders should investigate assortative mating to see, if this could be a viable alternative for them. :) Dan