alleryStart learning →How is bacterial DNA packaged compared with the DNA of a eukaryote?
AWith histone proteins and nucleosomes
BWith packing proteins but no nucleosomes
CWith no packing proteins whatsoever
DWith histone proteins but no nucleosomes
Answer & Solution
Correct answer: B. With packing proteins but no nucleosomes
1. Bacterial DNA still has to be squeezed into a small space, so it is packaged.
2. Proteins do help compact it inside the nucleoid.
3. Those proteins are not histones, so no nucleosomes form.
4. The bacterial packing proteins are instead related to the cohesin and condensin of eukaryotes.
5. Saying there are no packing proteins at all would leave the loop with no way to fit inside the cell.
_Source: OpenStax Biology 1e (CC BY 4.0), Chs 10 and 11, section 10.5 Prokaryotic Cell Division_
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