The kind of mating, using as one parent a known homozygous recessive, is called a testcross.
这种杂即利用一个已知的纯的隐性作一个亲本的杂,称。
The kind of mating, using as one parent a known homozygous recessive, is called a testcross.
这种杂即利用一个已知的纯的隐性作一个亲本的杂,称。
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