Anna waters her plants with salty water to them grow better. is her thinking correct?
no. the salt will interfere with absorption of water and the plants will die.
no. the salt will cause the water to diffuse out of the plants and they will wilt.
yes. salt will increase the water uptake of the plant.
yes. salt will provide the plant with sodium and chloride ions.

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?