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Like DNA microarrays, Northern blots analyze the levels of mRNA. However, Northern blots are almost ...

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Like DNA microarrays, Northern blots analyze the levels of mRNA. However, Northern blots are almost ...

Like DNA microarrays, Northern blots analyze the levels of mRNA. However, Northern blots are almost always prepared with a probe tagged with one label, whereas DNA microarrays almost always use two groups of probes, each one tagged with a different fluorescent label. What advantage is conferred by using two labels for the microarray probes?
A) The two labels increase the sensitivity of the microarray.
B) The two labels allow the analysis of the expression of more genes.
C) The two labels allow simultaneous assay of levels of DNA and RNA.
D) The two labels allow comparison of gene expression between two samples.
E) Probing the array with two labels is equivalent to doing two experiments at once.

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Biological Science, Canadian Edition

Edition: 2^nd

Authors: Freeman, Shar, Harrington

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