Question

What should be the phenotype of a cross between violet and white-flowered true-breeding garden pea plants?

(a) Violet

(b) White

(c) Pink

(d) Red

The question was posed to me at a job interview.

The above asked question is from Inheritance of One Gene-1 topic in division Principles of Inheritance and Variation of Biology – Class 12

Answer 1

Right option is (a) Violet

The explanation is: Violet is the dominant factor over white in pea flowers. Hence violet can express even in the presence of white. The cross of violet true-breeding and white true-breeding pea plants will produce all heterozygous offsprings. Thus, all of them will have violet flowers.