35. Which ofthe following statements about "a codon" is true? (A) consists of four nucleotides (B) can code for up to four different amino acids (C) extends from one end of a tRNA molecule (D) is the basic unit of the genetic code

8. The acetylation of lysines on the histone tails... (A)loosens chromatin structure by adding positive charges to histones. (B) recruits the heterochromatin protein HP1, resulting in the establishment of heterochromatin. (C) can be performed on methylated lysines only after they are first demethylated. (D) is a covalent modification and is thus irreversible.

35. Which ofthe following statements about "a codon" is true?
(A) consists of four nucleotides
(B) can code for up to four different amino acids
(C) extends from one end of a tRNA molecule
(D) is the basic unit of the genetic code

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