DNA associates very tightly with nucleosomes because
A) DNA can form covalent bonds with histone proteins.
B) negative charges on DNA are attracted to positive charges of the histone proteins.
C) the histone tails wrap tightly around the DNA double helix.
D) the amino acids of histone proteins are largely acidic, while DNA molecules are basic.
E) histone H1 tightens the coils of DNA that are wrapped around the nucleosome.
Correct Answer:
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Q2: The control of the cell cycle involves
Q3: During metaphase,
A) heterochromatin is converted to euchromatin.
B)
Q4: Horses and donkeys are closely related species
Q5: When a gamete that is lacking a
Q6: Chromosomes inside the nucleus do not overlap
Q7: A person who inherits an extra X
Q8: Chromosomes are replicated during the _ phase.
A)
Q9: If two triploid species interbreed, the offspring
Q10: If a cell contains 20 units of
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