How many linkage group are there in bacteria E. coli :-

Options

A. One
B. Two
C. Four
D. None

Answer

**Step-by-Step Solution:**

1. **Understanding Linkage Groups**: Linkage groups are defined as sets of genes that are inherited together due to their location on the same chromosome. The number of linkage groups in an organism corresponds to the number of chromosomes in its basic set.

2. **Identifying the Organism**: The question specifically asks about the bacterium *Escherichia coli* (E. coli). It is important to note that *E. coli* is a prokaryotic organism.

3. **Chromosome Structure in Prokaryotes**: Prokaryotes, including *E. coli*, typically have a single circular chromosome. This is different from eukaryotes, which can have multiple linear chromosomes.

4. **Determining the Number of Linkage Groups**: Since *E. coli* has only one circular chromosome, it has only one linkage group. Therefore, the number of linkage groups in *E. coli* is 1.

5. **Conclusion**: The correct answer to the question is that there is 1 linkage group in *E. coli*.

**Final Answer**: 1

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