NEET Botany Molecular Basis of Inheritance Questions Solved

NEET - 2013

If two persons 'AB' blood group marry and have sufficiently large number of children, these children could be classified as 'A' blood group : 'AB' blood group : 'B' blood group in 1 : 2 : 1 ratio. Modern technique of protein electrophoresis reveals presence of both 'A' and 'B' type proteins in 'AB' blood group individuals. This is an example of

(1) codominance

(2) incomplete dominance

(3) partial dominance

(4) complete dominance 


(1) In codominance both alleles of a pair express themselves fully in F1 hybrid. It is contrary to the situation seen in incomplete dominance, where traits express themselves only partially. Ths is not the example of partial dominance or compelete dominance

AB         lA lBGenotype         Antigen A +Antigen B         Codominance  


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