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(D) In bacteria,antibiotic resistance genes are typically found on plasmids. Plasmids are small,circular,double-stranded $DNA$ molecules that are dist

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Plasmids

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(D) In bacteria,antibiotic resistance genes are typically found on plasmids. Plasmids are small,circular,double-stranded $DNA$ molecules that are distinct from the cell's chromosomal $DNA$. These extrachromosomal elements can replicate independently and often carry genes that provide a survival advantage to the bacteria,such as resistance to antibiotics. Bacteria do not possess mitochondria,and while chromosomal $DNA$ contains essential genes,the specific resistance factors are most commonly associated with plasmids.

In bacteria,genes for antibiotic resistance are usually located in:

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