four strand double crossing over [遗] 四线双交换
double crossing over [遗] 双交换
double crossing over tetrad 双交换四分染色体 ; 双交换四分体
two-strand double crossing over 两线双交换
two strands double crossing over 两线双交换
three strands double crossing over 三线双交换
progressive double crossing over 渐进双交换
N a technique for producing hybrid stock, esp seed for cereal crops, by crossing the hybrids between two different pairs of inbred lines 双交; 两个单交种进行的杂交
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