There is no such thing as 'dominant hypo' and 'codominant hypo'.
Dominant, co-dominant, recessive, etc describe the genetic inheritance of a trait (the way a mutation is passed from parents to offspring). In boas, all albino genetic mutations are recessive, and all hypomelanistic mutations are dominant.

DOMINANT DOES NOT MEAN THAT PARTICULAR ANIMALS HAS A HOMOZYGOUS (TWO OF THE SAME) PAIR OF GENES.

Using dominant to describe a hypo that is homozygous and codominant to describe a hypo that is heterozygous (two non matching genes)is not only incorrect, it makes you sound silly (when I see breeders at shows with animals marked as such) but it serves to confuse the understanding of genetics that much more.

As for the original post, there are correct responses posted. They are called double hets, because thats what they are; heterozyougs for albino and heterozygous for hypo. This terminology is proper and it is used to distinguish an animal who is known to be heterozygous for albino and HOMOZYGOUS for hypo from those that are known to be 'double hets'.
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- Jason F.

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