California State University, Fullerton » Biology » Biology 251 - Genetics » Spring 2021

Question #1

The histone octamer includes two copies of all of the histones below except:

A. H2A.

B. H2B.

C. H4.

D. H1.

E. H3.

Question #2

Histone tails are enriched in their content of:

A. the acidic amino acids glutamate and aspartate.

B. the aromatic amino acids tyrosine and tryptophan.

C. the aliphatic amino acids leucine and alanine.

D. the basic amino acids lysine and arginine.

Question #3

A post-translational modification that neutralizes a side chain charge in histone tails is:

A. acetylation.

B. phosphorylation.

C. methylation.

D. alkylation.

Question #4

Transition of chromatin from closed to open for transcription activity is referred to as:

A. chromatin compression.

B. chromatin remodeling.

C. nucleosome remodeling.

D. chromosome remodeling.

E. nucleosome translocation.

Question #5

DNA methylation for regulation of gene expression primarily occurs on:

A. A residues in the sequence GAATTC.

B. C residues in the sequence CpG.

C. C residues in the sequence CCGG.

D. A residues in the sequence GATC.