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Questions  

Both the alleles express themselves equally in F1 generation, except

a
Antirrhinum flower colour
b
Sickle cell trait.
c
AB blood group.
d
Roan cattle.

detailed solution

Correct option is A

The F1 resembled either of the two parents (dominance) or express themselves equally in co-dominance. AB blood group, Sickle celled trait and roan cattle all exhibit codominance.The inheritance of flower colour in the dog flower (snapdragon or Antirrhinum sp.) is a good example of incomplete dominance.

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