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"genetic bottleneck" in cheetahs past
Transcript of "genetic bottleneck" in cheetahs past
of thousands of years ago
the cheetah species under-went a genetic bottleneck
leaving a drastic reduction in numbers, forcing them
to inbreed to
maintain their species.
causes a genetic
vulnerability that is
a cause of the cheetahs
rapid decline. Cheetahs of at least four different sub-species once roamed through
North America, Asia, Europe and Africa. Recently, the cheetah exists in
sub-Saharan Africa as only one sub-species, Acinonyx jubatus, with a
tiny remnant population barely surviving in northern Iran. http://www.citruscollege.edu/lc/archive/biology/Pages/Chapter15-Rabitoy.aspx Evidence of genetic bottleneck #3: Skulls How do we save these big cats from extinction? The Big Question: http://www.cheetah.org/?nd=genetic_diversity Be knowledgeable (learn more about big cat extinctions)
Donate to causes that have background in helping cheetahs
Volunteer at a local zoo/sanctuary www.cheetah.org Cheetahs are so alike that skin from one cheetah can be used as a skin graft for a whole other cheetah. The only other mammal known to be able to do this is the pocket gopher. http://www.nature.com/nature/journal/v381/n6583/pdf/381566b0.pdf http://bio150.chass.utoronto.ca/labs/cool-links/lab5/OBrien_et_al_1985_lab_5.pdf According to the enzymes, humans rate at about 70% identical; which seems a lot until compared to that of cheetahs who rate at about 97% identical. This rate, of 97%, is identical to that of lab rats who have been inbred for 20 generations. Leading to the conclusion that cheetahs have also been inbreeding for a long time. http://www.abc.net.au/science/articles/1999/08/02/40791.htm http://www.educationalbiofacts.com/educational-skulls-replica-mammalia-carnivora-felidae.html http://www.humansoul.com/Nature_2_0.html Is your skull
symmetrical? A cheetah's skull is asymmetrical. The more inbred an animal is the less symmetrical their skull will be. That means cheetahs, some where along the line, were forced to inbreed to save their species. http://www.abc.net.au/science/articles/1999/08/02/40791.htm A pedigree from an experiment
done by S.J. O'Brien et al. (1985) showing
cheetahs that had undergone a
skin graft from another cheetah The shaded in
areas are the
received a skin
graft and the
the donors. Each
was given a
skin graft and
each gave a skin