Question

Match column I with column II and select the correct option from the codes given below.

Column I	Column II
A. Mutation allele	(i) drastic change in population's frequencies
B. Gene flow	(ii) Differences in survival and reproduction among variant individuals.
C. Natural selection	(iii) Immigration, emigration change allele frequencies
D. Genetic drift	(iv) Source of new alleles

• A. $A-\left(i\right),B-\left(ii\right),C-\left(iii\right),D-\left(iv\right)$
• B. $A-\left(iv\right),B-\left(ii\right),C-\left(iii\right),D-\left(i\right)$
• C. $A-\left(v\right),B-\left(i\right),C-\left(iv\right),D-\left(ii\right)$
• D. $A-\left(iv\right),B-\left(iii\right),C-\left(ii\right),D-\left(i\right)$

Answer 1

Answer: (D)

$A-\left(iv\right),B-\left(iii\right),C-\left(ii\right),D-\left(i\right)$

Mutation of the allele is the source of new alleles. Gene flow is due to immigration , emigration that change the allele frequencies. Natural selection results into differences in survival and reproduction among variant individuals.

Genetic drift changes the population's frequencies.

So, the correct answer is 'A-(iv), B-(iii), C-(ii), D-(I)'