Question

Hoàn thành các phép lai sau bằng cách phân tích kết quả từng cặp gen

Vd; P: AABB x AABB =(AA x AA)(BB x BB)=(100%AA)(100%BB)=100%AABB

1. AABB x aabb

2. AAbb x aaBB

3. AaBB x AABb

4. aaBb x Aabb

5. AaBb x AaBb

Answer 1

1. AABB x aabb = (AA x aa)(BB x bb) = (100%Aa)(100%Bb) = 100%AaBb

2.AAbb x aaBB = (AA x aa)(bb x BB) = (100%Aa)(100%Bb) = 100%AaBb

3. AaBB x AABb= (Aa x AA)(BB x Bb) = (1/2AA : 1/2Aa)(1/2BB : 1/2Bb) = 1/4AABB : 1/4AABb : 1/4AaBB : 1/4 AaBb

4. aaBb x Aabb = (aa x Aa)(Bb x bb) = (1/2Aa : 1/2aa)(1/2Bb : 1/2bb) = 1/4AaBb : 1/4Aabb : 1/4aaBb : 1/4 aabb

5. AaBb x AaBb = (Aa x Aa)(Bb x Bb) = (1/4AA: 2/4Aa:1/4 aa)(1/4BB : 2/4Bb:1/4bb) = 1/16AABB : 2/16AaBB : 2/16AABb : 4/16AaBb : 1/16AAbb : 2/16 Aabb : 1/16aaBB : 2/16aaBb : 1/16aabb