Question

An allograft is
1. kidney from close relative
2. kidney from an identical twin
3. kidney from far relative who is a match
4. kidney from a person who died in accident and is a match

• A. 2 only
• B. 1 and 3 only
• C. 1, 3 and 4 only
• D. 3 and 4 only

Answer 1

The correct option is C 1, 3 and 4 only

Humans have a pair of kidneys for excretion purposes. Single kidney is sufficient for excretion, the other kidney is present as backup (in case one kidney fails). Hence anyone with a healthy kidney can donate one and survive with a single kidney.
Kidney which is transplanted surgically is known as graft. Graft can be isograft or allograft.
Isograft - Kidney from identical twin
Allograft - Kidney from person other than identical twin