The Argentine pattern/coloration isn't a morph, and therefore is neither dominant or co-dominant. Argentines and Columbians are different subspecies, and the babies appearance will be somewhere between a Columbian and an Argentine, in other words the babies will look like your adult crosses. As for permits, it depends on what country you live in, but in the US you don't need any permits to keep Argentines.
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LONG LIVE METAL!!!!

MY COLLECTION:
1.0 '04 Columbian BCI
0.1 '05 Blood Python
1.2 Ball Pythons

MY WISHLIST (I turn 18 on June 16th ):
A Northern Blue-Tongue Skink
1.1 Brazilian Rainbow Boas
1.1 Hogg Island Boas
1.0 Salmon BCI
0.2 Columbian BCI
1.1 Sumatran Short-Tail Pythons
1.1 Borneo Short-Tail Pythons
1.1 Dumerils Boas
1.1 Suriname BCC
1.2 Spotted Pythons
2.4 African House Snakes
1.2 Rubber Boas
2.4 Bearded Dragons
1.2 Rankins Dragons
2.6 Crested Geckos
1.1 purebred Dobermans
0.1 black German Shepherd
2 ferrets
A Senegal Parrot
A Sun Conure

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