Certified Coding Associate (CCA) Practice Exam

The correct term for tissue transplanted from one individual to another of the same species but with different genotype is allograft. This type of grafting is commonly seen in organ transplants where the donor and recipient are genetically different but belong to the same species, such as human to human transplants. Allografts often require immunosuppressive therapy post-transplant to prevent rejection, as the recipient's immune system may recognize the transplanted tissue as foreign due to the genetic differences.

In contrast, other terms refer to different types of grafts. A xenograft refers to transplantation between different species, such as from a pig to a human. Autograft is tissue transplanted from one part of the same individual’s body to another part, meaning there is no issue with genetic difference. An isograft involves transplantation between genetically identical individuals, such as identical twins, where the risk of rejection is negligible. Understanding these distinctions is crucial in the context of organ transplantation and grafting techniques.