All of the following are characteristics of RNA polymerase III promoters except:
A. the promoters contain two specific segments for transcription factor binding that lie within the coding sequences.
B. the TATA box is for TFIIIB binding.
C. promoter boxes A and B are bound by TFIIIC and lie downstream of the transcriptional start site.
D. within a species, all core promoters are the same.
E. All of the given characteristics are true of RNA polymerase III promoters.
The modern scientific field of evo-devo is based on observations that:
A. a relatively minor number of mutations leading to changes in regulatory patterns during development can fuel surprisingly rapid evolution.
B. very complex organisms do not necessarily have more genes than simpler organisms.
C. very different species have surprisingly similar types of genes.
D. All of the choices reflect observations upon which evo-devo is based.
Which of the following is not true of the process of nonsense-mediated mRNA decay?
A. Its function is to destroy mRNA molecules with premature stop codons.
B. The participation of the ribosome is not required.
C. It requires the marking of the mRNA before the mRNA is exported to the cytoplasm.
D. It involves the removal of the 5' cap of the mRNA.
Which of the following sequences is not generally found in the core promoter of RNA polymerase II?
A. BRE
B. DPE
C. enhancer
D. Inr
E. TATA
A mutant Drosophila is created that has double the number of bicoid genes, each of which is fully expressed. What is the most likely difference expected in this mutant compared to wild type Drosophila embryos?
A. Hunchback levels would be lower in the anterior portion of the embryo.
B. Caudal levels would be higher at the anterior portion of the embryo.
C. Less of the embryo would have posterior structures.
D. The Bicoid concentration gradient would be less at the anterior portion of the embryo.
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