Researchers used microarrays to examine the expression pattern of 25,000 genes from the primary tumor cells in women who had breast cancer. they determined that the gene expression patterns found in these tumor cells accurately predict the recurrence of cancer within five years after treatment. in this experiment, mrna from cancer cells and noncancer cells was converted into cdna and labeled with red fluorescent and green fluorescent markers, respectively. determine whether most of the genes represented on the microarray below are overexpressed or underexpressed in cancer cells from patients who remained cancer free for five years after treatment, and select the reason why. methods microarray chip with dnaprobes hybridization cdna with cells rna fluorescent bases noncancer cells tumors above the solid yellow line came primarily from patients who ra remained cancer free for at least 5 years. tumors below the solid yellow line came primarily from patients in whom the cancer spread within 5 years of diagnosis continued below.. resu tumors above the solid yellow line came primarily from patients who remained cancer free for at least 5 years. umors primarily from patients in whom the cancer spread within 5 years of diagnosis continued o conderardres ced be caluse green indicates genes that are expressed less in noncanicer cells to cancer cells. overexpressed, because green indicates genes that are expressed less in noncancer cells compared to cancer cells. underexpressed, because green indicates genes that are highly expressed in noncancer cells compared to cancer cells. overexpressed, because green indicates genes that are highly expressed in noncancer cells compared to cancer cells.