#Question id: 2822
#Unit 2. Cellular Organization
Transposition by a bacterial insertion element
a. occurs at a frequency of approximately 1 in 10^3 cells per generation.
b. can inactivate an essential gene.
c. is mediated through a RNA intermediate.
d. requires the enzyme transposase
#Question id: 2823
#Unit 2. Cellular Organization
Transposition by a retrotransposon requires activity of which of the following enzymes?
a. RNA polymerase b. reverse transcriptase
c. DNA methylase d. DNA polymerase
#Question id: 2824
#Unit 2. Cellular Organization
Plant mitochondrial DNA
a. is the same size as human mitochondrial DNA.
b. encodes a 5S mitochondrial rRNA.
c. contains multiple copies that recombine with each other.
d. uses the standard genetic code.
#Question id: 2825
#Unit 2. Cellular Organization
Metaphase chromosomes can be identified
a. by shape.
b. by the size and number of introns.
c. by banding patterns with Giemsa reagent.
d. by chromosome painting.
#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.