Question

Which of the following differences are incorrect between leading and lagging strands of $DNA$?

	Leading strand	Lagging strand
(i)	It does not require $DNA$ ligase for its growthr	DNA ligase is required for joining Okazaki fragments.
(ii)	Formation of leading strand is slower.	Formation of lagging strand is quite rapid
(iii)	Its template opens in $5^{\prime }\to 3^{\prime }$ direction	Its template opens in $3^{\prime }\to 5^{\prime }$ direction
(iv)	Formation of leading strand begins immediately at the beginning of replication.	Formation of lagging strand begins a bit later than that of leading strand.

• A. (ii) and (iv) only
• B. (ii), (iii) and (iv) only
• C. (ii) and (iii) only
• D. (i), (ii) and (iii) only

Answer 1

Answer: (C)

Correct answer is (c) (ii) and (iii) only