If the nitrogenous bases of both a DNA transposon and a retrotransposon were tagged with fluorescent markers, what statement best describes the result after transposition of both types of transposable elements (TEs) has occurred?
A. The markers would be found at the new site of the retrotransposon, but not at the new site of the DNA transposon.
B. The markers would be not be found at either new site.
C. The markers would be found at the new site of the DNA transposon, but not at the new site of the retrotransposon.
D. The markers would be found at the new sites of the DNA transposon and the retrotransposon.
Answer: C
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A. loss of water and loss of ions. B. loss of water and gain of ions. C. gain of water and loss of ions. D. gain of water and gain of ions. E. loss of urine and gain of ions.
Several scientists, including Charles and Francis Darwin, Frits Went and others, demonstrated that auxins caused stems to bend toward light in a series of elaborate experiments. Went was the researcher who finally determined that bending of the stem toward light was a result of which mechanism?
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Transgenic plant products include all of the following EXCEPT
A. antibodies produced by corn plants that deliver radioisotopes to tumor cells. B. soybeans that are resistant to a common herbicide. C. an antibody produced by soybeans to treat genital herpes. D. suicide genes that cause the plants to self-destruct after their product has been produced.
What effect does methylation of CpG islands have on human promoters?
What will be an ideal response?