Question

At each replication fork, one new strand of DNA is made of many small pieces. What is this strand of DNA called?

lagging strand
origin strand
leading strand
bubble strand

Answer 1

Ans.

DNA replication is a process that involves synthesis of two daughter DNA strands from a parent DNA molecule. During DNA replication, one strand of parent DNA synthesizes continuously, which is known as leading strand, while another strand synthesizes discontinuously, which is known as lagging stand.

These small pieces that are formed in lagging strand synthesis are called as Okajaki fragments. Thus, the correct answer is option 'lagging strand.'

Answer 2

DNA replication is the copying of a cell's DNA.One of the key molecules in DNA replication is the enzyme DNA polymerase.
Each strand in the double helix acts as a template for synthesis of a new, complementary strand.The lagging strand of DNA is made of many small pieces.