You should avoid using personally identifiable information.
Answer:
Chromatin is a substance within a chromosome consisting of DNA and protein. The DNA carries the cell's genetic instructions. The major proteins in chromatin are histones, which help package the DNA in a compact form that fits in the cell nucleus. Chromatin structure plays a key role in regulating gene expression by allowing DNA accessibility to transcriptional machinery and transcription factors.
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Answer: To tell how the environment was years ago and what kind of animals were able to live there. Hope this helps.
Explanation: