Based on the genotype of every individual in each SNPs sites, the PHASE program, which compiled by the theory of most likelihood, was used to affirm the haplotype and the distribution frequency of every haplotype in different chicken breed was calculated.

• 作者还依据每个个体在各SNPs位点的基因型采用基于最大似然法原理编写的PHASE程序进行单倍型的确认，并计算每种单倍型在各品种中的分布频率。