Question

Which of the following is an example of incomplete dominance?

(a) AB blood group

(b) Mirabilis jalapa

(c) Shape of crown in poultry

(d) Mouse coat colour

I have been asked this question by my college director while I was bunking the class.

This intriguing question comes from Mendel’s Principles topic in division Genetics of Life Sciences

Answer 1

The correct choice is (b) Mirabilis jalapa

Best explanation: The semidominant allele produces its biochemical products in lesser quantity in comparison to a dominant allele. Thus the heterozygote is of intermediate intensity. Example: cross of red and white flower gives pink flower.