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Stories by Stephen J. O'Brien6 articles archived since 1845

How House Cats Evolved

Genetic and archaeological findings hint that wildcats became house cats earlier—and in a different place—than previously thought

September 1, 2015 — Carlos A. Driscoll, Juliet Clutton-Brock, Andrew C. Kitchener and Stephen J. O'Brien

The Evolution of House Cats

Genetic and archaeological findings hint that wildcats became house cats earlier--and in a different place--than previously thought

June 1, 2009 — Carlos A. Driscoll, Juliet Clutton-Brock, Andrew C. Kitchener and Stephen J. O'Brien

The Evolution of Cats

Genomic paw prints in the DNA of the world's wild cats have clarified the cat family tree and uncovered several remarkable migrations in their past

July 1, 2007 — Stephen J. O'Brien and Warren E. Johnson

In Search of AIDS-Resistance Genes

A genetic trait that protects against AIDS has now been uncovered, and others are emerging. The findings open entirely new avenuesfor developing preventives and therapies

September 1, 1997 — Michael Dean and Stephen J. O'Brien

The Ancestry of the Giant Panda

Is the panda a bear? Is it a raccoon? Or does it actually belong in a family of its own? Molecular analysis provides new insights into this long-standing genealogical problem

November 1, 1987 — Stephen J. O'Brien

The Cheetah in Genetic Peril

The world's fastest land animal is in a race for continued survival. An ancient population bottleneck has resulted in genetic uniformity and has made the species extremely vulnerable to ecological change

May 1, 1986 — Stephen J. O'Brien, David E. Wildt and Mitchell Bush