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. H1.

B. H2A.

C. H4.

D. H2B.

E. H3.

Question #2

Histone tails are enriched in their content of:

A. the aliphatic amino acids leucine and alanine.

B. the acidic amino acids glutamate and aspartate.

C. the basic amino acids lysine and arginine.

D. the aromatic amino acids tyrosine and tryptophan.

Question #3

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

A. methylation.

B. acetylation.

C. alkylation.

D. phosphorylation.

Question #4

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

A. nucleosome remodeling.

B. chromatin remodeling.

C. chromosome remodeling.

D. nucleosome translocation.

E. chromatin compression.

Question #5

DNA methylation for regulation of gene expression primarily occurs on:

A. A residues in the sequence GAATTC.

B. A residues in the sequence GATC.

C. C residues in the sequence CCGG.

D. C residues in the sequence CpG.