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If two persons with 'AB' blood group marry and have sufficiently large number of children, these children could be classified as 'A' blood group : 'AB' blood group : 'B' blood group in 1 : 2 : 1 ratio. Modern technique of protein electrophoresis reveals presence of both 'A' and 'B' type proteins in 'AB' blood group individuals. This is an example of:
A
Complete dominance
B
Codominance
C
Incomplete dominance
D
Partial dominance
Detailed Solution
In the AB blood group both alleles $I^A$ and $I^B$ express themselves fully, producing both A and B type proteins. This is codominance.