Richard Gordon gordonr at cc.UManitoba.CA
Thu Oct 30 14:25:00 EST 1997

As I understand it, the essential difference between species and
quasispecies is the sheer number of variants that can be produced per
generation. For quasispecies, enough variant individuals are produced to
swarm up and down a significant number of local peaks in the rough fitness
landscape. For regular species, it's hard to get off a single peak.
Quasispecies work fine for geneomes up to 1000 codons. Organisms with
larger genomes are species. Refs in:

Gordon, R. (1994). Evolution escapes rugged fitness landscapes by gene or
genome doubling: the blessing of higher dimensionality. Computers &
Chemistry  18(3), 325-332.

Yours, -Dick Gordon

Dr. Richard Gordon, Department of Radiology
University of Manitoba, Health Sciences Centre
Rm. A246, 820 Sherbrook Street, Winnipeg, MB R3A 1R9 Canada
Phone: (204) 789-3828,  Fax: (204) 787-2080, Home: (204) 589-0411
E-mail: GordonR at cc.UManitoba.ca

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