In biology, histones are highly alkaline proteins found in eukaryotic cell nuclei that package and order the DNA into structural units called nucleosomes. They are the chief protein components<span> of </span>chromatin<span>, acting as spools around which DNA winds, and playing a role in </span>gene regulation<span>.</span>
Inner planets are all of the planets inside the asteroid belt, so that would be Mercury, Earth, Venus, and Mars.
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The answer this this is A. Cell