Observe the list of organism given below:
arabidopsis , Caenorhabditis , Sunflower , Drosophila , Honey bee, Rice , Wheat , Human , Yeast
How many of the given organism genome has been completely sequenced ?

Options

A. 6
B. 4
C. 7
D. 5

Answer

To determine how many of the given organisms have had their genomes completely sequenced, we can follow these steps:

### Step 1: List the Organisms
The organisms provided in the question are:
1. Arabidopsis
2. Caenorhabditis
3. Sunflower
4. Drosophila
5. Honey bee
6. Rice
7. Wheat
8. Human
9. Yeast

### Step 2: Identify the Organisms with Sequenced Genomes
Next, we need to identify which of these organisms have had their genomes completely sequenced. Based on scientific literature and genome databases, we know that:
- **Arabidopsis thaliana** (a model plant) - Genome sequenced
- **Caenorhabditis elegans** (a nematode) - Genome sequenced
- **Sunflower** - Genome not completely sequenced
- **Drosophila melanogaster** (fruit fly) - Genome sequenced
- **Honey bee** - Genome not completely sequenced
- **Rice** (Oryza sativa) - Genome sequenced
- **Wheat** - Genome not completely sequenced
- **Human** (Homo sapiens) - Genome sequenced
- **Yeast** (Saccharomyces cerevisiae) - Genome sequenced

### Step 3: Count the Organisms with Sequenced Genomes
Now, we count the organisms from the list that have had their genomes completely sequenced:
1. Arabidopsis
2. Caenorhabditis
3. Drosophila
4. Rice
5. Human
6. Yeast

This gives us a total of **6 organisms** whose genomes have been completely sequenced.

### Final Answer
The total number of organisms from the list that have had their genomes completely sequenced is **6**.

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