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NEET 2010 Biology question

BiologyPrinciples of Inheritance and VariationNEET 2010

ABO blood grouping is controlled by gene I which has three alleles and show co-dominance. There are six genotypes. How many phenotypes in all are possible?

Answer: (4)

Solution

The three alleles I, I and i give six genotypes: II, Ii (group A); II, Ii (group B); II

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Question ID VK-090425