63. How does the occurrence of self-fertilization relative to cross-fertilization affect the fixation of an advantageous andrecessive allele that newly arose in population by mutation?
(A) The relative occurrence of self-fertilization does not affect the fixation of the allele.
(B) The relative occurrence of self-fertilization affects the fixation of the allele only when the population is very small.
(C) The allele will be fixed more quickly when the occurrence of self-fertilization is higher.
(D) The allele will be fixed more quickly when the occurrence of self-fertilization is lower.
(E) The allele will be fixed more quickly when the occurrence of cross-fertilization is higher.