Class switch recombination does which of the following?
A) creates a change at a single nucleotide
B) copies nucleotide sequences from a pseudogene V into the V(J)D
C) swaps exons of the constant region between highly repetitive regions
D) all of these
C
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Which type of rock is abundant in older rock formations but more rare in newer formations, may contain oil or gas, and is formed by a reaction with a previous sedimentary rock?
A) anthracite B) bituminous coal C) chert D) dolostone
Were latitude the only control of temperature, the isotherms would run straight across the maps from east to west. Describe one region of the world where this hypothetical isotherm pattern is actually observed.
What will be an ideal response?
Pure colonial cities are located where colonial administrators can easily keep colonizers separate from the local population
Indicate whether this statement is true or false.
Does it appear that these drumlins have been significantly altered by stream erosion? Explain the reasons for your answer.
The question is based on Map T-12, the “Sodus, New York” quadrangle (scale 1:24,000; contour interval 10 feet) and Figure 47-3, a stereogram of this same area (43°09'55"N, 77°04'51"W). The map and stereogram show a number of drumlins, each with its long axis oriented approximately north-south. What will be an ideal response?