Ascientific theory is a well-tested explanation for a wide range of observations or experimental results. a hypothesis is a possible answer to a question. when does a hypothesis become a scientific theory? a. after the hypothesis is first formed by a scientist b. after a hypothesis is shown to be correct in one experiment c. after a competing hypothesis has failed testing d. after the hypothesis has been confirmed through extensive testing

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?