Question:
Transplantation of tissue between two genetically identical individuals (identical twins) is termed:
Transplantation of tissue between two genetically identical individuals (identical twins) is termed:
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Same species, same genes, but two separate people, what is that graft called?
Updated On: Jun 23, 2026
- Isograft
- Allograft
- Autograft
- Xenograft
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The Correct Option is A
Solution and Explanation
Correct option: Isograft.
Step 1: Grafts are classified by the genetic relationship between donor and recipient.
Step 2: An isograft (syngeneic graft) is tissue transferred between two genetically identical individuals, that is, between identical (monozygotic) twins. Because they share the same genes, there is no rejection.
Why the others are wrong: An autograft is tissue moved from one site to another on the SAME person. An allograft (homograft) is between two genetically different members of the SAME species, for example human-to-human kidney transplant. A xenograft (heterograft) is between DIFFERENT species, for example a porcine heart valve.
Ref: Bailey and Love, Short Practice of Surgery, 27th edition, 2018.
Step 1: Grafts are classified by the genetic relationship between donor and recipient.
Step 2: An isograft (syngeneic graft) is tissue transferred between two genetically identical individuals, that is, between identical (monozygotic) twins. Because they share the same genes, there is no rejection.
Why the others are wrong: An autograft is tissue moved from one site to another on the SAME person. An allograft (homograft) is between two genetically different members of the SAME species, for example human-to-human kidney transplant. A xenograft (heterograft) is between DIFFERENT species, for example a porcine heart valve.
Ref: Bailey and Love, Short Practice of Surgery, 27th edition, 2018.
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