If suprachiasmatic nucleus (SCN)tissue is transplanted from a short-period hamster into a normal hamster,
A)no change can be observed.
B)the normal hamster will show 20-hour cycles.
C)the normal hamster will show 24-hour cycles.
D)the normal hamster will show 25-hour cycles.

Question

If suprachiasmatic nucleus (SCN)tissue is transplanted from a short-period hamster into a normal hamster,​ 
A)no change can be observed. 
B)the normal hamster will show 20-hour cycles. 
C)the normal hamster will show 24-hour cycles. 
D)the normal hamster will show 25-hour cycles.

Quizplus · Accepted Answer

The suprachiasmatic nucleus (SCN) is the primary circadian pacemaker in mammals. Transplanting SCN tissue from a short-period hamster into a normal hamster will cause the recipient to adopt the donor's circadian rhythm, resulting in 20-hour cycles.

If Suprachiasmatic Nucleus (SCN)tissue Is Transplanted from a Short-Period Hamster