The ability of one parent, variety, or strain to transmit individual traits to an offspring, apparently to the exclusion of the other parent, variety, or strain.
优先遗传父母一方的某些品种或品系具有的将自身特点传给后代的能力，并明显地排斥了父母另一方，另一种品种或品系的作用。
Results:A stable strain was obtained with the titer of flavomycin increased by 170.25% than parent strain.
结果：获得一株遗传稳定且黄霉素发酵效价比出发菌株高出170.25%的菌株。
The precocious line was much less pathogenic than the parent strain judged by mortality and weight gains, but its immunogenicity was reduced to some degree.
根据死亡和增重判断早熟株的致病性较亲本株大大降低，但其免疫原性也有一定程度的下降。
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