P element transposition requires the enzyme transposase, which acts at the ends of the P element. To find transposons in a germ line, which of these is best?
A) use of a "crippled" P element that cannot transpose itself but can produce the enzyme
B) use of a "crippled" P element that can be transposed if there is another source of transposase
C) use of a P element that does not share the genome of the germ line
D) use of restriction sites that flank the inserted P element
E) use of DNA ligase to incorporate the P element
A
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Which of the following statements about the 5' end of a polynucleotide strand of RNA is correct?
A) The end has a hydroxyl group attached to the number 5 carbon of ribose. B) The end has a phosphate group attached to the number 5 carbon of ribose. C) The end has phosphate attached to the number 5 carbon of the nitrogenous base. D) The end has a carboxyl group attached to the number 5 carbon of ribose. E) The end is the fifth position on one of the nitrogenous bases.
Explain the purpose and uses of the chi-square test.
What will be an ideal response?
Few fossils of early Homo have been found, and there is much debate about whether different individuals should be grouped together. Which of these is believed to be more ancient than the others?
A. Homo rudolfensis B. Homo ergaster C. Homo sapiens D. Homo habilis
In building a confidence interval for the ATE of an experiment, what object will determine the spread of the confidence interval?
A. Average outcome for the treated group B. Sample standard deviation for the treated group C. Average outcome for the control group D. Null hypothesis value