In the human genome project, the method that is involved in identifying all the genes that are expressed as RNA is referred to as

Options

A. sequence annotation.
B. expressed sequence tags.
C. bioinformatics .
D. DNA fingerprinting

Answer

To solve the question regarding the method used in the Human Genome Project to identify all genes expressed as RNA, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for a specific method used in the Human Genome Project that identifies genes expressed as RNA.

2. **Analyzing the Options**:
- **Option 1: Sequence Annotation**: This refers to the process of identifying the locations of genes within a genome. It does not specifically focus on RNA expression.
- **Option 2: Expressed Sequence Tag (EST)**: This is a short sub-sequence of complementary DNA (cDNA) that is used to identify gene transcripts. It is specifically designed to identify genes that are expressed as RNA.
- **Option 3: Bioinformatics**: This is the application of computational tools to manage and analyze biological data. While it plays a role in genomics, it is not a method for identifying RNA expression specifically.
- **Option 4: DNA Fingerprinting**: This technique is used for identifying individuals based on their unique DNA patterns. It is not related to gene expression.

3. **Selecting the Correct Answer**: Based on the analysis, the correct method that identifies genes expressed as RNA in the Human Genome Project is **Expressed Sequence Tag (EST)**.

### Final Answer:
The method involved in identifying all the genes that are expressed as RNA in the Human Genome Project is referred to as **Expressed Sequence Tag (EST)**.

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