I agree with wlcmmtt in everything except calling a pastel ball python het for super pastel.

Pastel is the name of the mutant gene.

Homozygous pastel is a genotype -- two pastel genes in the gene pair.
Heterozygous pastel is a genotype -- a pastel and a normal gene in the gene pair.

Super pastel is the phenotype (appearance) produced by the homozygous pastel genotype.
Besides being the name of the gene, pastel is also the phenotype (appearance) produced by the heterozygous pastel genotype.

"Het for super pastel" mixes genotype and phenotype.The pro geneticists frown on this sort of mix. You can call a pastel ball python a pastel (phenotype) or a heterozygous pastel (genotype), but calling it a het for super pastel is out.

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