Question

Choose the correct statement about the direction of the DNA strand.

• A. DNA synthesis takes place in 5' $\to$ 3' direction on the template strand
• B. DNA synthesis takes place in 3' $\to$ 5' direction on the new strand
• C. DNA synthesis takes place in 5' $\to$ 3' direction on the leading strand
• D. None of these

Answer 1

Answer: (C)

The new DNA strand is formed on a 3' to 5' strand continuously in 5' $\to$ 3' direction. This strand which is formed continuously is called leading strand, and this synthesis is aided by the enzyme DNA polymerase.