+) có 1 phép lai: $\frac{AB}{ab} \times \frac{AB}{ab}$ cho ra KH: 3A-B-:1aabb
+)có 17 phép lai cho tỉ lệ 1:1 là:
AB/ab x ab/ab, AB/Ab x ab/ab, AB/aB x ab/ab
AB/Ab x Ab/Ab, AB/Ab x Ab/ab, AB/ab x Ab/Ab, Ab/Ab x aB/ab, AB/Ab x ab/ab, Ab/aB x Ab/Ab
Ab/ab x ab/ab
aB/ab x ab/ab
AB/aB x aB/aB, AB/aB x aB/ab, AB/ab x aB/aB, Ab/ab x aB/aB, AB/aB x ab/ab, Ab/aB x aB/aB
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