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From: "Dale E. Reddick" <>
Subject: Somewhat Off Topic - Cat genetics & evolution - X, Y, & mt-DNA analyses.
Date: Fri, 06 Jan 2006 22:40:53 -0500


Hi Folks,

This seems somewhat akin to the spread of humans and our comprehension
of anthrogenealogy.

Dale E. Reddick


/Science/ 6 January 2006:
Vol. 311. no. 5757, p. 12
DOI: 10.1126/science.311.5757.12g


<http://www.sciencemag.org/cgi/content/short/311/5757/12f>t
<http://www.sciencemag.org/cgi/content/short/311/5757/12h>;


This Week in /Science/

Unraveling the relatively recent speciation events that led to the
modern cat family, which includes lions, tigers, clouded leopards, and
domestic cats, has been hampered by an incomplete fossil record and a
lack of distinguishing skeletal features. *Johnson /et al./* (p. 73)
analyze an extensive array of X-chromosome, Y-chromosome, and
mitochondrial DNA sequences sampled from all 37 extant cat species to
produce a phylogenetic tree that resolves the eight major lineages of
cats. Modern cats appear to have originated in Asia 10 million years ago
and undertook a series of 10 intercontinental migrations that correlate
with major fluctuations in sea level.



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