Discontinuous synthesis of DNA occurs in one strand, because

Options

A. DNA molecule being synthesised is very long
B. DNA dependent DNA polymerase catalyes polymerisation only in one direction (5'`to`3')
C. it is a more efficient process
D. DNA ligase has to have a role

Answer

B

Explanation

DNA polymerase adds deoxyribonucleotides to the free 3'-end of the growing polynucleotide chain so, that replication of the 5'`to`3' strand of the DNA molecule is continuous (growth of the new strand in 5'`to`3' direction)
Since, DNA dependend DNA polymerase catalyses polymerisation only in one ndent DNA one direction `(5'to4')` discontinuous synthesis of DNA occurs in the other strand .