All stages of Ixodes, the vector for Lyme disease, may feed on humans.
Answer the following statement true (T) or false (F)
True
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What is the role of Rad51 in eukaryotic recombination events?
A. It introduces single-strand breaks in the chromosome. B. It degrades the 5'-ending strand to create 3'-ending single-strand overhangs. C. It is a helicase that assists in separating the DNA strands at the site of breakage. D. It is a single-strand DNA binding protein that coats the 3'-ending single-strand overhang. E. It is a RecA-class recombinase that mediates strand invasion.
What are cataracts? What causes them?
What will be an ideal response?
Compared to low tidal marshes, high tidal marshes are characterized by
A) lower salinity. B) decreased input of nutrients. C) higher tidal exchange rates. D) a phenotypically taller, greener cordgrass (Spartina).
In yeast, if you want to prevent the Gal4 regulatory protein from binding near each of the GAL genes, which sequence element would you target?
A) core promoter B) proximal elements C) enhancer sequence D) homeodomain motif E) upstream activator sequence