Match the evolution concepts given in column-I with their description given in column-II and select the correct answer. Column-I Column-II A. Mutation I. Change in population?s allele frequencies due to chance alone. B. Gene flow II. Differences is survival and reproduction among variant individuals. C. Natural selection III. Immigration, emigration change allele frequencies. D. Genetic drift IV. Source of new alleles.

• A. A-I; B-II; C-III; D-IV
• B. A-IV; B-II; C-III; D-I
• C. A-III; B-I; C-IV; D-II
• D. A-IV; B-III; C-II; D-I