How many copies of DNA sample are poduced in PCR technique after 6-cycle

Options

A. 4
B. 32
C. 16
D. 64

Answer

To determine how many copies of DNA are produced in the PCR technique after 6 cycles, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Basics of PCR**:
- PCR (Polymerase Chain Reaction) is a technique used to amplify DNA. Each cycle of PCR doubles the amount of DNA.

2. **Identify the Starting Point**:
- We start with 1 copy of DNA.

3. **Calculate the Number of Copies After Each Cycle**:
- After 1 cycle:
- 1 DNA copy × 2 = 2 copies
- After 2 cycles:
- 2 copies × 2 = 4 copies
- After 3 cycles:
- 4 copies × 2 = 8 copies
- After 4 cycles:
- 8 copies × 2 = 16 copies
- After 5 cycles:
- 16 copies × 2 = 32 copies
- After 6 cycles:
- 32 copies × 2 = 64 copies

4. **Conclusion**:
- After 6 cycles of PCR, there will be 64 copies of DNA.

### Final Answer:
- The number of copies of DNA produced after 6 cycles of PCR is **64**.