7. ABO IA , IB i
1) IAi x IB IB
IA IB : IB i
=1 : 1
AB : B
= 1 : 1
2) IAi x ii
IAi : ii
=1 : 1
A:O
= 1 : 1
http://www.thaigoodview.com/library/contest2552/type2/science04/27/contents/genetics-
198a.html
8. R1 = , R2 =
R1 R2
R1 R1 = R2R2 =
R1R2 = Roan (
1:2:1
ABO
IA = A
IB = B
9. i = A B
IA IB
A
B
IAIA = A A
IBIB = A B
IAIB = A AB
ii = i
O
5
12
13
23