When number of genes increases in response to some signal effect is called as

Gene pool is the sum total of all genes present in a reproductive gametes of a population which are then transferred from parent to offspring. Gene frequency refers to proportion of different genes in a population; gene frequency of offspring is determined by that of parents. The number of copies of a gene present in a cell or nucleus of an individual is known as gene dosage. An increased gene dosage leads to higher levels of gene product provided the gene is not under regulation from elsewhere in the body. Gene amplification is increasing the number of copies of a gene, i.e., increase in gene dosage. It takes place when a multigene family carries mutant gene/genes. Correct answer is C.