Question:

If a mother is donating a kidney to her son, it is an example of-

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Same species, but genetically non-identical donor and recipient - what is that graft called?
Updated On: Jun 23, 2026
  • Isograft
  • Allograft
  • Autograft
  • Xenograft
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The Correct Option is B

Solution and Explanation

Step 1: Grafts are classified by the genetic relationship between donor and recipient.
Step 2: An allograft is a graft between two genetically non-identical members of the same species. A mother and her son are both humans but are not genetically identical, so a kidney transferred between them is an allograft.
Step 3: Because the genotypes differ, the recipient must take anti-rejection or immunosuppressant drugs to stop the body from rejecting the transplanted kidney. Most human organ transplants are allografts.
Step 4: The distractors do not fit: an isograft is between genetically identical individuals (identical twins), an autograft uses the patient's own tissue, and a xenograft is between different species. The answer is allograft.
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