Detailed Instructions: Given a passage with a question and an answer to that question, classify if the answer actually answers the question into 'yes' or 'no'. Output 'yes' if the answer answers the question and output 'no' if the answer does not answer the question.
Q: Question: Are organ boundary NAC-domain transcription factors implicated in the evolution of petal fusion?
Answer: Together with previous data, our results demonstrate conservation of petunia CUC-like genes in establishing inter-floral whorl organ boundaries, as well as functional evolution to affect the fusion of petunia petals.
A:
yes