Three microsatellite locis were selected to investigate DNA polymorphism and genetic distance within four pig breeds(Landrace:L, Large White:Y, Sichuan White:S and Duroc:D).

• 选择应用三个微卫星标记分析了长白猪、大白猪、四川白猪和杜洛克猪 4个品种的DNA多态性与遗传距离 .