Agreed. Pinstripe is a much younger mutation and we have already had the answer for it for a year or two. Hopefully we can get those numbers on the spider clutches and maybe know if the rumor that spider is dominant is true or not. However if the numbers don't yet support a proven homozygous spider then the homozygous lethal explanation still remains plausible. If it is homozygous lethal, it may not be possible to ever prove that.