Heterozygous

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Heterozygous Trait

When a Leopard Gecko is heterozygous for a trait, it means it has one copy of the gene. An example of a Leopard Gecko who is heterozygous for a trait is a Mack Snow. In all reality, Mack Snows are heterozygous to be Super Snows. You need two of the Mack Snow trait (homozygous) to create a Super Snow.

When using the letters on the Punnent Square, a heterozygous trait would be represented by a lowercase letter and a uppercase letter or two different letters both different cases.