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Co-dominance in humans is well shown by:
ABile pigment type
BBody hair colour
CBlood group ABO
DBone marrow type
Answer & Solution
Correct answer: C. Blood group ABO
1. Co-dominance means both alleles are expressed.
2. A good example is the red blood cell types that determine ABO blood groups.
3. So the correct answer is blood group ABO.
_Source: NCERT Class 12 Biology, Ch 5 'Principles of Inheritance and Variation'_
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