Question

Choose the correct statement for the infection process of M13.

(a) The infectious particle is double stranded

(b) It is contained in a protein coat which is made up of products of gene III or gene VIII

(c) The phage infects only female cells

(d) The phage enters the bacterial cells by the filament which is meant for movement

This question was posed to me in my homework.

My query is from BAC Vector, M13 and its Derivatives topic in division Other Vector Systems for E of Genetic Engineering

Answer 1

Correct option is (b) It is contained in a protein coat which is made up of products of gene III or gene VIII

Easy explanation: M13 infectious particles are single stranded in nature. It is contained in a protein coat which is made up of products of gene III or gene VIII. The phage infects the bacterial cells by sex pilus and thus it infects only male cells.