[" 11.Which one of the following carnot be explained on "],[" the basis of Mendel's Law of Dominance "],[" a) The discrete unit controlling a particular charac- "],[" ter is called a factor "],[" b) Out of one pair of factors one is dominant,and "],[" the other recessive "],[" c) Alleles do not show any blending and both the "],[" characters recover as such in "F_(2)" generation "],[" d) Factors occur in pairs "]