A) are always circular
B) are always linear
C) can be either circular or linear, but never both within the same cell
D) can be circular as well as linear within the same cell
Correct Answer: A
Solution :
Chromosomes in a bacterial cell can be 1-3 in number and are always circular. The nucleoid of bacteria consists of a single, large DNA double helix which is circular in several bacteria. In addition to the circular DNA chromosome, a small amount of subsidise extra chromosomal DNA is also present known as plasmids or episomes.
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