Question

Histones are highly conserved across eukaryotes. Which one of the following is NOT consistent with and supportive of this observation? A) Histone variants are particular to some cell types and cell functions. B) All histones have the same general functions—to condense DNA and regulate access to it. C) DNA is composed of the same chemicals in all organisms. D) Histones are rich in arginine and lysine. The amino acid K9 of histone H3 is acetylated in the nucleosomes found in one region of chromatin. The gene or genes in this region of chromatin are more likely to be A) Transcriptionally inactive B) Insensitive to in vitro treatment with DNaseI C) Transcriptionally active D) Found outside the nucleus E) Cut with the restriction enzymes present in the nucleus

          Histones are highly conserved across eukaryotes. Which one of the following is NOT consistent with and supportive of this observation?

A) Histone variants are particular to some cell types and cell functions.
B) All histones have the same general functions—to condense DNA and regulate access to it.
C) DNA is composed of the same chemicals in all organisms.
D) Histones are rich in arginine and lysine.

The amino acid K9 of histone H3 is acetylated in the nucleosomes found in one region of chromatin.

The gene or genes in this region of chromatin are more likely to be

A) Transcriptionally inactive
B) Insensitive to in vitro treatment with DNaseI
C) Transcriptionally active
D) Found outside the nucleus
E) Cut with the restriction enzymes present in the nucleus

Added by Jennifer J.

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