Okazaki fragments are formed on one of the strand of DNA, known as

Options

A. Leading strand
B. Lagging strand
C. Continuous strand
D. More than one option is correct

Answer

To answer the question regarding where Okazaki fragments are formed during DNA replication, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding DNA Replication**: DNA replication occurs in a semi-conservative manner, where each strand of the double helix serves as a template for the formation of a new complementary strand.

2. **Identifying the Replication Fork**: During replication, the DNA unwinds at a region called the replication fork, creating two strands: one that is continuously synthesized and one that is synthesized in fragments.

3. **Leading and Lagging Strands**:
- The **leading strand** is synthesized continuously in the same direction as the replication fork opens. It runs in the 5' to 3' direction.
- The **lagging strand**, on the other hand, is synthesized discontinuously in the opposite direction of the replication fork. It runs in the 3' to 5' direction and is formed in short segments.

4. **Formation of Okazaki Fragments**: The short segments of DNA synthesized on the lagging strand are known as **Okazaki fragments**. These fragments are later joined together by the enzyme DNA ligase to form a continuous strand.

5. **Conclusion**: Therefore, Okazaki fragments are formed on the **lagging strand** of DNA during replication.

### Final Answer:
Okazaki fragments are formed on the **lagging strand** of DNA.

---