possible way to prove if butter and lesser are same or different morph?

[Serpent_Nirvana]

Anyone read the sciencenews.org article a while back about the short legged dog breeds? Suppose any of the ball python mutations could be extra copies of genes? Maybe one extra copy makes a phantom, two a mojave, and three a lesser, lol.

I searched the site but couldn't find it -- I'd love to read that article; do you have a link? Thanks!

I'm still thinking about the tight linkage theory ...