2024 Principles of Inheritance and VariationMendel's Law of Dominance Medium Question 1 of 2 in Mendel's Law of Dominance

Which one of the following can be explained on the basis of Mendel's Law of Dominance? A. Out of one pair of factors one is dominant and the other is recessive. B. Alleles do not show any expression and both the characters appear as such in F2 generation. C. Factors occur in pair in normal diploid plants. D. The discrete unit controlling a particular character is called factor. E. The expression of only one of the parental characters is found in a monohybrid cross. Choose the correct answer from the options given below:

A B, C and D only
B A, B, C, D and E
C A, B and C only
D A, C, D and E only

The answer is D.

Solution

The Law of Dominance explains that characters are controlled by discrete units called factors (D), that factors occur in pairs in normal diploid plants (C), that of a pair of dissimilar factors one is dominant and the other recessive (A), and that only one of the parental characters is expressed in a monohybrid cross (E). Statement B is not explained by the law of dominance. So A, C, D and E only are correct.

Concept Statements explainable by the law of dominance

Mendel's Law of Dominance in past papers

2 questions from this chapter have appeared across 2 exam years.