Question

On which of the following factor, the degree of redness of progenies depend?

(a) Number of dominant alleles

(b) Number of recessive alleles

(c) Number of contrasting traits

(d) Number of phenotypic characters

The question was posed to me by my college professor while I was bunking the class.

My question is based upon Polygenic Inheritance in chapter Principles of Inheritance and Variation of Biology – Class 12

Answer 1

The correct option is (a) Number of dominant alleles

The best explanation: When we crossed a red and white kernelled variety of wheat, we saw that all the red kernels do not exhibit the same shade of redness. The degree of redness was found to depend upon the number of dominant alleles.