Q: In this task, you are given a question and a context passage. You have to answer the question based on the given passage.
What has selective breeding done to French Bulldogs that makes it impossible to mate?, Context: Some dog breeds have acquired traits through selective breeding that interfere with reproduction. Male French Bulldogs, for instance, are incapable of mounting the female. For many dogs of this breed, the female must be artificially inseminated in order to reproduce.
A:
Male French Bulldogs, for instance, are incapable of mounting the female