Question

Match the following of column I with that of column II.

Column I	Column II
i. Mutation	p. Random allele frequency fluctuation
ii. Genetic recombination	q. Migration of genes/alleles from one population to another
iii. Gene migration	r. Occurrence of new genetic combination during sexual reproduction
iv. Genetic drift	s. Sudden change in DNA sequence

• A. i – p, ii – q, iii –r, iv – s
• B. i – s, ii – r, iii – q, iv – p
• C. i – s, ii – r, iii – p, iv – q
• D. i – s, ii – q, iii – r, iv – p

Answer 1

The correct option is B i – s, ii – r, iii – q, iv – p

Mutation – It is a sudden and directionless change in a DNA sequence which can be inherited by the next generation. It can bring significant change in the mutated organism.

Genetic recombination – It is the occurrence of new genetic combination which is a product of sexual reproduction. It occurs duet to the crossing over of non-sister homologous chromosomes during meiosis.

Gene migration – It is the movement of genes outside the population affecting the allele frequency. It is caused by emigration or immigrations of large number of individuals.

Genetic drift - Genetic drift describes random fluctuations in the numbers of gene variants in a population. Genetic drift takes place when the occurrence of alleles increases and decreases by chance over a period of time.