Some individuals with blood group $A$ may inherit the genes for blonde hair, while other individuals with blood group $A$ may inherit the gene for brown hair. This can be best explained by the principle of

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 $F_2$ generation.
$C$. Factors occur in pairs 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:

What is the first law of Mendel?

Describe various laws based on monohybrid experiment.

The genotype of an individual is $RrBb$. How many different types of gametes will it produce based on the law of independent assortment?

If Mendel had chosen linked genes for his study of trait inheritance, he would not have discovered which of the following?