Rachel is convinced that her occasional headaches are caused by a malignant brain tumor. although several physicians have assured her that she has no serious physical problem, rachel continues to seek medical attention for a brain tumor. her behavior provides an example of

Part a - which gene to compare? in this exercise, you will use the cytochrome c oxidase i (coi) gene to investigate relationships among salmon species. (this gene encodes a protein that functions in the mitochondrial electron transport chain.) you will compare the coi gene sequences from your salmon test samples to the standard sequences for each salmon species. in order for the coi gene to be useful for distinguishing among the different salmon species, which three statements must be true?