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| Page 690 Scientists are not sure why resistance to HIV would have been a favourable variation in the past. Some scientists have hypothesized that a mutation in the CCR5 receptor helped people resist a form of bubonic plague. Other scientists have suggested that the mutation provided protection against the smallpox virus. Analyze the evidence for these hypotheses, and draw your own conclusions. | ||
| The Geographic Spread of the CCR5-Delta32 HIV-Resistance Mutation | ||
| A link to the original scientific study, authored by Novembre, Galvani, and Slatkin, as well as to a synopsis of the paper, may be found
here. Click on the first entry under the heading "Publications." ( http://biology.plosjournals.org/perlserv/?request=get-document&doi=10.1371/journal.pbio.0... ) | ||
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| The Evolutionary History of the CCR5-Delta32 HIV-Resistance Mutation | ||
| A link to the original scientific study, authored by Galvani and Novembre may be found here. Click on the second entry under the heading
"Publications." ( http://ib.berkeley.edu/labs/slatkin/novembre/ ) | ||
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| Evaluating Plague and Smallpox as Historical Selective Pressures for the CCR5-{Delta}32 H... | ||
| A complete scientific study, authored by Galvani and Slatkin, is available here. ( http://www.pnas.org/cgi/content/full/100/25/15276 ) | ||
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| Page 691 The Yukon to Yellowstone Conservation Initiative (Y2Y) combines land stewardship with scientific research to protect habitat within the numerous mountain corridors spanning these two regions. How does the preservation of critical mountain corridors influence gene flow within the Yukon to Yellowstone region? | ||
| Y2Y | ||
| Yellowstone to Yukon Conservation Initiative ( http://www.y2y.net/ ) | ||
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| University of Waterloo | ||
| Conservation on a Regional Scale: Assessing the Yellowstone to Yukon Conservation Initiative ( http://etheses.uwaterloo.ca/display.cfm?ethesis_id=288 ) | ||
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| Canadian Parks and Wilderness Society Yukon Chapter | ||
| Yellowstone to Yukon (Y2) ( http://www.cpawsyukon.org/conservation/yellowstone-to-yukon.html ) | ||
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| The Lions of Ngorongoro Crater | ||
| Research about the Ngorongoro Crater lions. ( http://www.lionresearch.org/current/ngorongoro.html ) | ||
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| Ngorongoro Crater | ||
| From the Encyclopedia Britannica. ( http://www.britannica.com/eb/article-9055650/Ngorongoro-Crater ) | ||
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| Page 693 Africa’s Ngorongoro Crater in Tanzania is home to a population of lions (Panthera leo) that exhibit little genetic variation. Although the steep crater walls prevent easy movement of animals in and out, migrations of lions have occured over time. Why is there so little genetic diversity in this lion population and what is the population’s current status? | ||
| The Lion Research Center | ||
| Tod-down population regulation of a top predator article about lions in the Ngorongoro Crater. ( http://www.lionresearch.org/main.html ) | ||
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| Page 697 What do you do when you re-establish a bird population that migrates, but has no parents to learn from? Whooping crane conservationists have become very creative! | ||
| Reintroduction of Whooping Cranes: The Ultra(light) in Animal Training Experience | ||
| This is an overview, with photographs, of a successful reintroduction of migratory whooping cranes. ( http://www.pwrc.usgs.gov/prodabs/ab10010302/5800duff.pdf ) | ||
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| Operation Migration | ||
| Canadians Bill Lishman (who first flew with birds—Canada geese, in 1988—in an ultralight aircraft) and
Joseph Duff are two of the main forces behind the rearing and re-establishment of crane populations. Learn about the work that they and their team do in
support of the cranes. ( http://www.operationmigration.org/ ) | ||
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| Direct Autumn Release | ||
| Read about this new technique for reintroducing young cranes to their migratory flock. Why was this alternative method
designed? ( http://www.bringbackthecranes.org/back/sup-release-qas.htm ) | ||
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