#Question id: 2826
#Unit 2. Cellular Organization
An open reading frame (ORF) is defined as a DNA sequence that
a. begins with a start codon.
b. ends with a stop codon.
c. contains 50 codons.
d. contains approximately an equal frequency of A, T, G, and C.
#Question id: 2827
#Unit 2. Cellular Organization
Two related genes that are derived from a gene duplication event are considered to be
a. homologous.
b. paralogous.
c. orthologous.
d. members of a gene family.
#Question id: 2828
#Unit 2. Cellular Organization
A transcriptionally active gene compared with a transcriptionally inactive gene would be expected to
a. contain acetylated histones.
b. contain unacetylated histones.
c. be sensitive to DNase I.
d. be resistant to DNase I.
#Question id: 2829
#Unit 2. Cellular Organization
Scaffold-associated regions
a. are the chromosome attachment points for the mitotic spindle.
b. can insulate transcription units from each other.
c. are the points at which DNA interacts with histone proteins.
d. are found between transcription units.
#Question id: 2830
#Unit 2. Cellular Organization
#Question id: 2831
#Unit 2. Cellular Organization
Specific DNA control elements in promoters can
a. interact with general transcription factors.
b. interact with repressor proteins.
c. interact with activator proteins.
d. remain unavailable because of condensed chromatin.