Assertion (A): Binary fission results in genetically identical progenies.
Reason ( R): Cell division in prokaryotes does not exhibit DNA replication.

Options

A. Both A and R are true and R is the correct explanation for A.
B. Both A and R are true, but R is not the correct explanation for A.
C. A is true and R is false.
D. A is false and R is true.

Explanation

To solve the assertion and reason question, we will analyze both the assertion (A) and the reason (R) step by step.

### Step 1: Understand the Assertion (A)
The assertion states: "Binary fission results in genetically identical progenies."
- Binary fission is a method of asexual reproduction commonly seen in prokaryotes (like bacteria).
- In binary fission, a single organism divides into two parts, each of which becomes a new organism. Since this process involves no mixing of genetic material from different organisms, the offspring are genetically identical to the parent.

**Conclusion for Step 1:** The assertion is true.

### Step 2: Understand the Reason (R)
The reason states: "Cell division in prokaryotes does not exhibit DNA replication."
- This statement is incorrect. In fact, prokaryotic cell division (binary fission) does involve DNA replication. Before a prokaryotic cell divides, it replicates its DNA so that each daughter cell receives a complete copy of the genetic material.
- Therefore, the reason provided does not correctly explain the assertion.

**Conclusion for Step 2:** The reason is false.

### Step 3: Combine the Conclusions
- The assertion is true: Binary fission does result in genetically identical progenies.
- The reason is false: Cell division in prokaryotes does involve DNA replication.

### Final Answer
Based on the analysis, the correct answer is that the assertion is true and the reason is false.