ABO blood group system in human being obeys the following phenomena: (A) Complete dominance (B) Co-dominance (C) Multiple allelism (D) Incomplete dominance
A
A, B and C
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B
B, C and D
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C
B and C
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D
A and C
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Solution
The correct option is C B and C ABO blood group system in human being obeys the co-dominance phenomena that is, a situation where both the alleles are expressed in heterozygous state. There are three type blood alleles in humans.