What is a terozygous?

The term "terozygous" appears to be a typographical error, as it is not a recognized term in genetics. You might be referring to "heterozygous," which describes an organism that has two different alleles for a specific gene, one inherited from each parent. In contrast, "homozygous" refers to having identical alleles for a gene. If you meant a different term, please clarify for a more accurate response.