Never met TSK in person and can't really say I know them but they seem genuinely concerned with adding the ball python knowledge base so thinking it will be ok to share results from a few e-mails with Colette on this subject over the years.
In 2007 they produced 8 eggs from spider X spider and the two smallest eggs didn't hatch. Colette didn't mention the spider to normal ratio of the six hatchlings from 2007 but did say all the spiders where female so haven't bred yet.
In 2008 they produced 6 good eggs and one slug from spider X spider and hatched 1.4 spiders and a normal. The male wasn't bred yet for this year.
So, no breedings yet to test the possible homozygous spiders. Out of 15 eggs 3 didn't hatch but not sure if the slug should be counted or not. Did the other two eggs not hatch because they where small or where the small and didn't hatch because they where homozygous spiders?
NERD reported years ago that "enough" breedings had been done to prove that there wasn't a different looking homozygous spider but didn't quantify.
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