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Standard XII
Biology
What Is a Gene?
What human tr...
Question
What human traits are codominant?
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Solution
Codominant:
Codominance is the condition where both alleles are equally expressed in a phenotype.
ABO blood group inheritance shows codominance.
The gene determining the blood group is present in three allelic forms I
A
, I
B,
and i. I
A
and I
B
are codominant over i.
When I
A
and I
B
are present together, both the genes are expressed phenotypically with the blood group AB.
It is also an example of multiple alleles.
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