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Principles of Inheritance and Variation

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  1. ABO blood group system is due to
    1. multifactor inheritance
    2. incomplete dominance
    3. multiple allelism
    4. epistasis
Correct Option: C

A gene may have more than two alternative forms occupying the same locus on a chromosome such alleles are known as multiple alleles and the phenomenon is turned as multiple allelism. ABO blood group has 3 alleles. IO, IA or A, IB or B.


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