question_answer

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