Regarding nucleosome structure, which of the following statements is correct?
Group of answer choices
-Nucleosomes permit efficient packing of DNA to about one seventh its normal length.
-Nucleosomes are spherical structures comprised of RNA, nonhistone proteins and histone proteins
-The major histones comprising nucleosomes are H1 and H4.
-The histone associated with the DNA in the linker region holding nucleosomes is called H2A.
-All of the above.