Which of the following is not part of the mismatch repair (MMR) mechanism?
A. MutS and MutL form a complex at the site of the mismatch and while scanning in both directions along the DNA form a loop.
B. Mismatched bases are recognized by MutS.
C. When the MutS/MutL complex finds a GATC site, MutH binds to the complex and cleaves the methylated strand.
D. Helicase and exonuclease activities unwind and degrade the strand containing the mismatched base.
E. Pol III fills the gap and ligase seals the DNA strand.
C
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_____ ferns. _____ mosses. _____ horsetails. _____ liverworts. _____ conifers. _____ oak trees.
Where is the nucleus of a neuron found?
A. Cell body B. Myelin sheath C. Axon branches D. Dendrites E. Companion cell
Researchers tend to name genes based on what
happens in their absence. The tinman gene in Drosophila results in flies a. without hearts. b. with nonjointed legs. c. with a thick exoskeleton. d. with rust colored eyes. e. without brains.
Using the information in the accompanying figure, explain what short polypeptide is produced from the DNA segment
AAG GGC CTT. Include in your answer the role of mRNA and tRNA. What will be an ideal response?