If a Researcher Is Examining Cells from a Breast Tumor

Multiple Choice

If a researcher is examining cells from a breast tumor biopsy which of the following microarray assay (DNA chip) outcomes would best support a diagnosis that the tumor is cancerous?

A) a mitochondrial encoded gene shows significantly higher expression in these cells than in liver cells
B) the pattern of fluorescence indicates some cells are undergoing mitosis.
C) the expression pattern in these cells differs from the pattern in non-tumor breast tissue
D) a group of cDNAs expression matches those in colon cancer samples from the same population