Which statement accurately describes the relationship between RNAi, small interfering RNA (siRNA), and miRNA?
a. They all describe different methods of post-translational gene regulation.
b. miRNAs are classified into two types: RNAi molecules and siRNAs.
c. RNAi occurs in two ways: by miRNAs or by siRNAs.
d. RNAi is accomplished by siRNA and miRNA, but only siRNAs are cleaved by dicer proteins.
e. miRNAs are transcribed from viruses while siRNAs are transcribed from nuclear DNA; both are types of
ANSWER: c
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When species diversity is calculated, what is being measured?
A. Species number. B. The evapotranspiration rate. C. Both species number and relative abundance. D. The resistance of a community to disturbance. E. The process of inhibition.
A key trait that distinguishes gnathostomes from other chordate lineages is the presence of
a. bony scales. b. claspers. c. jaws. d. the operculum. e. keratin.
What is the correct pathway of information to go from a gene to a protein in a eukaryotic cell?
What will be an ideal response?
What nucleotide sequence would be found on the complementary DNA strand of the strand shown here?
A) ACTGT
B) UGAGA
C) TGACA
D) TGUGU