Chromosomes in a bacterial cell can be 1–3 in number and:
- Are always circular
- Are always linear
- Can be either circular or linear, but never both within the same cell
- Can be circular as well as linear within the same cell
The Correct Option is D
Solution and Explanation
Bacterial cells can have one or more circular chromosomes, and some bacteria can also have linear plasmids or linear chromosomes in addition to their circular chromosomes. The precise arrangement of genetic material can vary among different bacterial species.
So, the correct option is (D): Can be circular as well as linear within the same cell
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Concepts Used:
Biological Classification
The process of grouping living organisms into categories is called biological classification. The most modern 5-kingdom classification was put ahead by an eminent scientist R.H.Whittaker. The five-kingdom classification is based on the criteria like cell structure, mode of nutrition, body form, and reproduction. One of the most important characteristics of this system is that it follows the evolutionary sequence of living organisms. The organisms are classified into distinct taxa or levels like Kingdom, Phylum, Division, Class, Order, Family, Genus, and Species. The 5 kingdoms are as follows:
