In What Way Does Gene Regulation Differ in Eukaryotes and Prokaryotes

In what way does gene regulation differ in eukaryotes and prokaryotes?

A) The prokaryotic RNA polymerase can bind directly to DNA,whereas the eukaryotic polymerase cannot.
B) The eukaryotic RNA polymerase can bind directly to DNA,whereas the prokaryotic polymerase cannot.
C) Global gene regulation is absent in prokaryotes.
D) DNA-protein interactions are involved in gene regulation only in prokaryotes.
E) Sigma factors are absent in eukaryotes.

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