[Campbell Biology P.496] According to the text, in the Saccharomyces cerevisiae experiment, ... | Practice Question
According to the text, in the Saccharomyces cerevisiae experiment, how did researchers infer whether two gene products interacted within the cell?
A: If the observed fitness of the double mutant matched the prediction from the single mutants, the gene products interacted.
B: If the observed fitness of the double mutant was greater or less than the prediction from the single mutants, the gene products interacted.
C: If the observed fitness of the double mutant was greater than the prediction, the gene products interacted; if it was less, they did not.
D: If the observed fitness of the double mutant was less than the prediction, the gene products interacted; if it was greater, they did not.
Explanation
The text clearly states: 'if the observed fitness was greater or less than predicted, then the gene products interacted in the cell.' This means any deviation from the predicted fitness indicates an interaction.