It would mean that you have a 50% chance of the snake carrying the gene. In other words one of the parents was 100% het for the trait and the other parent didn't carry it. This way, there was a 50% chance that the gene was being passed on to the offspring. For instance, albinism is recessive, so we can label the gene as: a Normal would be labeled as: A
One parent does not carry the trait, so it is AA and can only pass on normal genes. The other parent would carry a gene for the trait, so it is Aa and has a 50% chance of passing on the gene for the recessive trait. With this example, all of the offspring would have a 50% chance of receiving the gene (a)
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