Question

The number of linkage group in E.coli is/are

• A. 4
• B. 2
• C. 1
• D. 5

Answer 1

The correct option is C 1

The number of linkage groups equals the number of chromosomes in the basic set. The number of linkage groups in an organism is equal to the haploid number of its chromosomes. Example - In Drosophila, the haploid number is n = 4, so linkage group is 4. But the number of linkage group is prokaryotes (bacteria, like E. coli) is one. This is because bacteria being prokaryotes have only a single circular chromosome.

So, the correct answer is '1'.