If you think of the DNA molecule as a ladder, does one circular DNA means that there is one half of the ladder there, or does it mean that there is one ladder, and that two circular dna means there are two ladders in the circle??? :-) Hope my analogy isn't too confusing!What is one circular DNA as opposed to two circular DNA?
Bacteria can have circular chromosomes. It's not one strand of DNA forming a circle, but looped DNA strands wrapped around proteins which form a circular chromosome.
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