Q: 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.
Question: Does variation in 12 porcine genes involved in the carbohydrate moiety assembly of glycosphingolipids account for differential binding of F4 Escherichia coli and their fimbriae?
Answer: We conclude that no regulatory or structural variation in any of the investigated genes is responsible for the genetic susceptibility of pigs towards F4 ETEC.
A:
no