Question

What is the error in above diagram?

• A. Arrows are wrongly depicted.
• B. Polarity is incorrect.
• C. Both arrows and polarity are incorrect.
• D. None of the above.

Answer 1

The correct option is B Polarity is incorrect.

The DNA replication takes place in 5' to 3' direction always. On leading strand, DNA replication is continuous while on lagging strand DNA replication is discontinuous. The polarity of lagging strand is incorrect in the given figure.

Both the strands should be anti-parallel. In one strand, carbon of sugar are in 3' -5' direction and in other the carbon of sugar are in 5' -3' direction.