Adding acetyl groups to a histone regulates gene expression by allowing transcription to proceed by
A) increasing the pH of the cell.
B) loosening the DNA wound around the histone.
C) modifying the nucleotides of the promoter region of the DNA molecule.
D) enhancing the activity of RNA polymerase.
E) enhancing the development of a DNA-RNA hybrid.

Question

Adding acetyl groups to a histone regulates gene expression by allowing transcription to proceed by
A) ​increasing the pH of the cell.
B) ​loosening the DNA wound around the histone.
C) ​modifying the nucleotides of the promoter region of the DNA molecule.
D) ​enhancing the activity of RNA polymerase.
E) ​enhancing the development of a DNA-RNA hybrid.

Quizplus · Accepted Answer

Adding acetyl groups to a histone loosens the DNA wound around the histone, making the DNA more accessible to transcription factors and RNA polymerase. This allows for an increase in gene expression.

Adding Acetyl Groups to a Histone Regulates Gene Expression by Allowing