Question

The essential sites for recombination are known as __________

(a) chi sites

(b) rec sites

(c) gam sites

(d) red sites

The question was posed to me during an online interview.

This key question is from Cloning in Lambda topic in chapter Other Vector Systems for E of Genetic Engineering

Answer 1

Correct option is (a) chi sites

For explanation I would say: The sites necessary for recombination are known as chi sites. Host recombination enzymes may not work until and unless the recombination sites are present.