"A probe is allowed to hybridize with its complimentary DNA in a clone of cells and is later on detected by autoradiography".
Above step is the part of.

Options

A. Recombinant DNA technology
B. Polymerase chain reaction
C. RNA interference
D. Gene therapy

Answer

To solve the question, "A probe is allowed to hybridize with its complementary DNA in a clone of cells and is later on detected by autoradiography," we need to identify the process being described. Here’s a step-by-step breakdown:

### Step 1: Understand the Role of the Probe
A probe is a short strand of nucleic acid that is labeled (often radioactively) and is used to detect the presence of complementary sequences of DNA.

**Hint:** Think about what a probe does in molecular biology.

### Step 2: Identify the Hybridization Process
Hybridization refers to the process where the probe binds to its complementary DNA sequence. This forms a hybrid molecule, which is crucial for the detection of specific DNA sequences.

**Hint:** Consider what happens when two complementary strands of DNA come together.

### Step 3: Recognize the Formation of Recombinant DNA
When the probe hybridizes with its complementary DNA, it forms a hybrid molecule. This hybridization is a key step in recombinant DNA technology, where DNA from different sources is combined.

**Hint:** Remember that the term "recombinant" indicates the combination of DNA from different origins.

### Step 4: Detection Method - Autoradiography
Autoradiography is a technique used to visualize the hybridized probe. It allows researchers to see where the probe has bound to the DNA by producing a detectable signal (like a band on a film) where the radio-labeled probe is located.

**Hint:** Think about how scientists visualize specific molecules in a sample.

### Step 5: Conclusion
Given the steps outlined above, the entire process described in the question is part of recombinant DNA technology. This technology involves the use of probes for hybridization and autoradiography for detection.

**Final Answer:** The correct answer is **recombinant DNA technology**.