The hereditary material (DNA) present in the bacterium E.coli is `:`

Options

A. single stranded DNA
B. deoxyribose sugar
C. double stranded DNA
D. single stranded RNA

Explanation

To solve the question regarding the hereditary material (DNA) present in the bacterium E. coli, we can follow these steps:

### Step 1: Understand the Structure of E. coli
E. coli is a type of bacterium, and like most bacteria, it contains genetic material that is crucial for its functions and reproduction.

### Step 2: Identify the Type of DNA in Bacteria
In bacteria, the hereditary material is typically in the form of DNA. It is important to note that bacterial DNA is usually circular and double-stranded.

### Step 3: Analyze the Options Given
1. **Single-stranded DNA**: This is incorrect because E. coli does not have single-stranded DNA as its primary genetic material.
2. **Deoxyribose sugar**: While deoxyribose is a component of DNA, it is not the hereditary material itself, so this option is also incorrect.
3. **Double-stranded DNA**: This is correct as E. coli contains double-stranded DNA that is circular in structure.
4. **Single-stranded RNA**: This is incorrect because E. coli does not use RNA as its hereditary material.

### Step 4: Conclusion
Based on the analysis, the correct answer is that the hereditary material (DNA) present in the bacterium E. coli is **double-stranded DNA**.

### Final Answer
The hereditary material (DNA) present in the bacterium E. coli is **double-stranded DNA**.

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