Number of linkage groups in Escherichia coli is

Options

A. 1
B. 2
C. 4
D. 5

Answer

**Step-by-Step Solution:**

1. **Understanding Linkage Groups:**
- Linkage groups are defined as a set of genes that are located on the same chromosome and tend to be inherited together due to their physical proximity. This means that genes within the same linkage group can influence each other's inheritance patterns.

2. **Identifying the Chromosomal Structure of E. coli:**
- Escherichia coli (E. coli) is a bacterium that has a simple genetic structure. It typically contains a single circular chromosome.

3. **Determining the Number of Linkage Groups:**
- Since E. coli has only one circular chromosome, it can be concluded that there is only one linkage group present. This is because all the genes on this single chromosome are linked together.

4. **Conclusion:**
- Therefore, the number of linkage groups in Escherichia coli is one.

**Final Answer:**
The number of linkage groups in Escherichia coli is 1.

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