Following Description
Regulates entry and exit of materials into and out of the cell?
Controls all the cell's activities?
Contains cell sap?
The site where most of the cell's chemical reactions take
place?

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?