A plant has a mutation in the gene that codes for systemin.What is the likely consequence of this mutation?

Question

Quizplus · Accepted Answer

Systemin is a peptide hormone that activates a signaling pathway leading to the production of proteinase inhibitors in response to herbivore attack. If the gene that codes for systemin is mutated, the receptors for systemin will not be activated and the transcription of proteinase inhibitors will not be initiated. Hence, the best choice is D. The other choices are incorrect because mutations in the systemin gene would not result in a hypersensitive response or toxic environment, nor would it affect R genes and avr genes.

A Plant Has a Mutation in the Gene That Codes