When elliot engages in intense exercise, particularly in cold weather or during allergy season, his bronchial tubes fill with mucus and contract. this causes him to cough and have serious breathing difficulties. elliot has a. nocturnal enuresis. b. emphysema. c. bronchitis. d. asthma?

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?