Blue eyes are recessive and brown eyes are dominant.

蓝眼睛是隐性的；而褐色眼睛是显性的。

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合的隐性为一个亲本的杂，称为测。

For crop improvement，haploidy enables the achievement of rapid homozygosity, enhanced selection efficiency for recessive genes, and breeding at a diallelic state for autopolyploid species.

物改良，单倍体速得到纯合体、提高隐性基因的选择效果及双等位基因条件下培育同源多倍体品种。