00:04
All right.
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Cheetah populations in africa have been increasing for the past several decades, from numbers in the hundreds to numbers in the thousands.
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A study was conducted in which skin tissue samples were obtained from five wild cheetahs and grafted onto five other cheetahs.
00:19
An immune response regarding non -self tissue rejection was absent in the cheetahs that received the skin grafts.
00:26
Recently, a small wild population of cheetahs has become infected with with a new type of infectious cancer, scientists are concerned about the extinction of the entire species because...
00:37
So we have option a, wild cheetah.
00:40
Excuse me, populations have lost their genetic diversity and are now equally susceptible to diseases.
00:46
That's actually looking to be a pretty valid option.
00:49
Option b, the immune systems of wild cheetahs have become suppressed by stressors in their environments.
00:53
Well, there's nothing in this that really backs up that argument, so we can eliminate that choice...