First slide

Inheritance of One Gene

Question

Both the alleles express themselves equally in F₁generation, except

Easy

A

Antirrhinum flower colour
B

Sickle cell trait.
C

AB blood group.
D

Roan cattle.

Solution

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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