obviously 1 non-morph proves it not being homozygous (aside from a mutation happening right before your eyes) and the chances of that happening might be better than you getting 49 eggs all morphed with a heterozygous animal, since is 560 trillion to 1.
It was just something I thought about reading another thread, also you always hear rumors of "super spiders", i was just curious IF someone thought they had one, when can they go public with it and say, i am confident this is a homozygous animal.