I have seen it first hand when one of my females ended up being a male that did not have the simple recessive gene I was breeding for. Homozygous male and female plus the normal male all together produced hets and homozygous babies. Should have been all or nothing and the male was proven out in successive years as a normal when breed to the homozygous female, a het female and then sold to someone who knew the breeding history and still tried to prove him as a het and failed.

So long answer given short, yes it can happen but it seems as though the males all need to be around at the same time. On a totally different not this is also why some species that have mating balls develop sperm plugs to block other males from breeding as seen in garters and anacondas.

Jason

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