In a genome-wide expression study using a DNA microarray assay, each well is used to detect the

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In a genome-wide expression study using DNA microarray assay, each well is used to detect the expression of a specific gene by a cell. The microarray contains probes that can bind to mRNA transcripts, allowing measurement of the expression levels of thousands of genes simultaneously. This information can be used to identify genes that are differentially expressed under different conditions or in different cell types. The other options (A, B, C, and E) are not correct because they do not relate to the detection of gene expression.

In a Genome-Wide Expression Study Using a DNA Microarray Assay