On the maximum avoidance of inbreeding

摘要: Mating systems in which the least related individuals are mated have been designated by Wright as having maximum avoidance of inbreeding. For such initial rate decrease heterozygosity is minimum. However, some other a lower later generations.Circular mating, each individual with one to his right and left, leads an asymptotic 1– λ ˜ π2/(2N + 4)2 compared 1/4N for systems. Circular pair example male progeny moved cage right, ~ π2/(N 12)2. Other similar discussed.For minimum gene frequency drift, mating system should constant number per parent population be broken up rapidly possible into lines. The variance at generation T within line iswhere N Ht proportion heterozygotes t. Although three systems, circular, circular pair, (and many others) same amount random drift ultimately, any has smallest variance, VT, next smallest.