While it's ideal to use distant relatives to start out, you can breed brother/sister to start your line breeding if you only have one family... then use their offspring to breed back to their parents. I won't have to do that any time soon, but it is an option for future generations. As long as I have 2 families, I should be able to breed them indefinitely without introducing new blood. I just have to make sure I keep excellent records to know who came from who...The answer is no. I have tried it and all of the offspring turned out to be SC. Future generations from her chicks would be SC. If you got a RC male from her you could breed him back to her, the original RC female, then you still could get some SC but a greater chance of RC. SC is dominant over RC. There are some breeders who use our SC line and breed into their RC line and do get some RC and SC. My original breeding years ago was a RC male with SC females and I got about 50/50 RC/SC. OK to breed mother/son, father/daughter.