I've been doing a lot of research on tail types and genetics. HM are interesting in that breeding an HM to an HM does not produce 100% HM fry. In fact, a lot of the information I've been reading says to be happy with 10%. Ok so the question is, is it only possible to get HM fry by breeding HM parents? Will a delta tail only produce delta tails? If an HM were to be bred to a delta tail, would any of the fry be HM? Or is it a waste of time breeding the delta tail to an HM if I want HM fry? I have not found much information on this subject. Thanks in advance.