Mobilizable genomic islands (MGIs) differ from integrative conjugative elements (ICEs) in that ________.
A. MGIs are insertion sequences, whereas ICEs are transposons
B. MGIs are transferred by conjugation, whereas ICEs are transferred by transduction
C. MGIs transfer pathogenicity islands, whereas ICEs transfer antibiotic-resistance genes
D. MGIs include an att site, allowing large portions of the bacterial chromosome to be transferred, whereas ICEs are transposons in nature
Answer: D
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