Question:easy
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
Show Solution
The Correct Option is A
Solution and Explanation
Four-word ladder by genetic distance. Walk the donor source from nearest to farthest:
Autograft = self (one person, two sites).
Isograft = identical twin (genetically same, two people).
Allograft = same species, different genes (human to human).
Xenograft = different species (animal to human).
Apply it: identical twins are genetically the same yet are two separate individuals, which is exactly the isograft slot, one step beyond autograft. Because the genomes match, an isograft is not rejected, just like an autograft. The key trap is allograft, but that needs genetic difference, which identical twins do not have. So the correct term is isograft. Ref: Bailey and Love, Short Practice of Surgery, 27th edition, 2018.
Autograft = self (one person, two sites).
Isograft = identical twin (genetically same, two people).
Allograft = same species, different genes (human to human).
Xenograft = different species (animal to human).
Apply it: identical twins are genetically the same yet are two separate individuals, which is exactly the isograft slot, one step beyond autograft. Because the genomes match, an isograft is not rejected, just like an autograft. The key trap is allograft, but that needs genetic difference, which identical twins do not have. So the correct term is isograft. Ref: Bailey and Love, Short Practice of Surgery, 27th edition, 2018.
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