rjensen at SAINTMARYS.EDU
Mon Aug 28 08:35:10 CDT 1995
I am curious to know how readers of this list respond to the following.
In an article in TREE (vol. 10, pages 294-299), James Mallet refers to
the concept of isolating mechanisms as "...one of the most extraordinary
pieces of philosophical trickery ever foisted successfully on a community
of intelligent human beings." Further, the use of this expression is
"...anachronistic; few researchers on speciation or hybrid zones
seriously now use these terms."
I will take the position that isolating mechanisms are a legitimate
aspect of our investigation of speciation. Unless there is something
operating to restrict gene flow between populations, we are not in a
position to argue that the populations belong to different species.
Understanding what it is that prevents gene flow (the isolating mechanism)
Any thoughts on this?
Richard J. Jensen | E-MAIL: rjensen at saintmarys.edu
Dept. of Biology | TELEPHONE: 219-284-4674
Saint Mary's College | FAX: 219-284-4716
Notre Dame, IN 46556 |
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