DNA microarrays
A) are used to analyze genomic DNA.
B) determine genes that are transcribed.
C) use oligoribonucleotides as probes.
D) probe noncoding regions of DNA.
E) detect proteins that are translated.

Question

Quizplus · Accepted Answer

DNA microarrays are designed to detect the expression levels of genes by measuring the amount of mRNA transcripts that are present in a sample. This makes option B the correct choice. Option A is incorrect because genomic DNA is not transcribed into mRNA and would not be detected by a microarray. Option C is incorrect because oligoribonucleotides are RNA molecules, not DNA molecules, and are not typically used as probes for microarrays. Option D is incorrect because microarrays are designed to detect coding regions of DNA that are transcribed into mRNA. Option E is incorrect because microarrays do not detect proteins directly, but instead measure mRNA levels to infer the level of protein expression.

DNA Microarrays