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ABO blood grouping is an example of a.multiple alleles b. codominance c. incomplete dominance d. law of segregation e. back cross

( a ) a and e
( b ) all of the above
( c ) a and b
( d ) a,b and d
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Ans: (D) a, b and d
Three genes are controlling a trait. So multiple alleles. Genes are $I_A$ and $I_B$ are codominant over each other. Hence Codominance.
Law of Segregation: During gamete formation, genes will segregate and enter each gamete.
answered Nov 30, 2016 by suganyadevi.p
edited Dec 27, 2016 by suganyadevi.p

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