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Which processes is/are inhibited by compact chromatin structures? All of the above DNA replication DNA Repair...

Which processes is/are inhibited by compact chromatin structures?
All of the above
DNA replication
DNA Repair
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Answer #1

Answer: In compact chromatin structure, DNA is tightly packed around the histone proteins to form nucleosomes and then nucleosome arrays (heterochromatin). Enzymes involved in DNA replication (such as DNA polymerase), DNA repair and transcription (such as RNA polymerase) are unable to access the DNA in highly compact chromatin structures and hence inhibit those processes. The correct answer is all of the above (option 1).

During interphase of the cell cycle, chromatin structure is structurally loose and allows DNA polymerase, DNA repair enzymes and RNA polymerase to access the DNA for DNA replication, DNA repair and transcription, respectively.

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