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n.测交（一种使杂种子一代与隐性类型交配以测定杂种子一代遗传型的方法）； 英英释义： testcross[ 'testkrɔs, -krɔ:s ]n.a cross between an organism whose genotype for a certain trait is unknown and an organism that is homozygous recessive for that trait so the unknown genotype can be determined from
