I agree that it's the 50:50 answer. But you hit one of my pet peeves with the "only recessive traits will give hets". There are lots of het lessers. A het lesser has a gene pair made up of a lesser gene and a normal gene. They are known as lessers in the trade and do not look normal. The belief that a heterozygous snake looks normal is a holdover from the days when the only mutant genes in reptiles were recessive mutants. The lesser mutant gene is not a recessive mutant because the heterozygous snakes do not look normal.