Which one of the following statements is TRUE regarding the packing and condensing of DNA?

Question

Quizplus · Accepted Answer

Histone proteins are positively charged and bind to the negatively charged DNA, allowing for compaction and packing of DNA. This is known as chromatin. Histones are important in regulating gene expression by controlling DNA accessibility for transcription factors to bind and initiate gene expression. Therefore, genes are not always exposed on the outer curves of coiled DNA (choice B) and histones are more commonly found on tightly packed (not loosely packed) DNA to create higher levels of compaction (choice C). Histones are not removed when chromosomes condense but rather undergo modifications to alter their interactions with DNA and produce distinct chromatin conformations (choice D).

Which One of the Following Statements Is TRUE Regarding the Packing