Genes of interest can be selected form a genomic library by using

Options

A. DNA probes
B. Gene targets
C. Restriction enzymes
D. Cloning vectors.

Answer

To answer the question "Genes of interest can be selected from a genomic library by using", we will follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of a Genomic Library**:
- A genomic library is a collection of DNA fragments that represent the entire genome of an organism. These fragments are stored in a way that allows for the identification and retrieval of specific genes.

2. **Identify the Purpose of Selection**:
- The goal is to select specific genes of interest from this library. This process involves identifying and isolating particular DNA sequences that correspond to the genes we want to study or manipulate.

3. **Examine the Options Provided**:
- The options given are:
- A) DNA probes
- B) Gene targets
- C) Restriction enzymes
- D) Cloning vectors

4. **Evaluate Each Option**:
- **A) DNA Probes**: These are short sequences of single-stranded DNA that can hybridize (bind) to complementary sequences in the genomic library. They are specifically designed to detect the presence of a target gene.
- **B) Gene Targets**: This term refers to the specific genes we are interested in, but it does not refer to a method of selection.
- **C) Restriction Enzymes**: These are used to cut DNA at specific sequences but do not directly select genes from a library.
- **D) Cloning Vectors**: These are used to carry DNA fragments into host cells but are not used for the selection process itself.

5. **Conclude with the Correct Answer**:
- The correct answer is **A) DNA Probes**. DNA probes are essential for identifying and selecting genes of interest from a genomic library through the process of hybridization.

### Final Answer:
Genes of interest can be selected from a genomic library by using **DNA probes**.

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