Q.8 During transcription (A) DNA Gyrase introduces negative supercoils and DNA Topoisomerase I removes negative supercoils (B) DNA Topoisomerase I introduces negative supercoils and DNA Gyrase removes negative supercoils (C) both DNA Gyrase and DNA Topoisomerase I introduce negative supercoils (D) both DNA Gyrase and DNA Topoisomerase I remove negative supercoils
Q.8 During transcription
(A) DNA Gyrase introduces negative supercoils and DNA Topoisomerase I removes negative supercoils
(B) DNA Topoisomerase I introduces negative supercoils and DNA Gyrase removes negative supercoils
(C) both DNA Gyrase and DNA Topoisomerase I introduce negative supercoils
(D) both DNA Gyrase and DNA Topoisomerase I remove negative supercoils
Answer
Answer: (A) DNA Gyrase introduces negative supercoils and DNA Topoisomerase I removes negative supercoils
DNA Gyrase (a type II topoisomerase) introduces negative supercoils to relieve torsional strain during transcription, while DNA Topoisomerase I removes these supercoils.