You are interpreting data on a DNA chip or microarray. You expose the chip to a

Question

You are interpreting data on a DNA chip or microarray. You expose the chip to a mixture of two cDNA populations: one from cells that were not treated with a glucocorticoid hoemone (untreated controls; labeled with a red fluorescent dye) and a population from cells that were treated with glucocorticoid hormones (glucocorticoid-treated; labeled with green fluorescent dye). You look at a spot on the chip representing the gene for glutamyltransferase, a gene that is turned off after glucocorticoid treatment but expressed in its absence. What color should the spot for the glutamyltransferase gene be?

Explanation / Answer

yellow

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