What is close inbreeding?
Close inbreeding is the mating of close relatives. The closest form of inbreeding in domestic animals involves matings between full brothers and sisters (full sibs) and between parents and offspring (collectively called first-degree relatives). The next most close form of inbreeding involves matings between grand-parents and grand-offspring, between half brothers and sisters (half sibs), between uncles/aunts and nephews/nieces, and between double-first cousins (collectively called second-degree relatives).
