1.

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?(A) six(B) Three(C) Four(D) Five

Answer»

(C) Four

The six genotypes are - IAIA or IAi, IBIB or IBi, IAIB, ii.

The four phenotypes are – A, B, AB, O.



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