by Stephen T. Abedon Ph.D. Steve Abedon, Ph.D., has taught well over 100 individual classes and ~10 individual courses (including introductory biology, microbiology, physiology, biochemistry, etc.) over his 30+ years as a college professor. He has over 150 publications, including multiple monographs, and is ranked in the top 1 or 2 percent among researchers of all disciplines worldwide. His research focuses on bacteriophage biology and phage therapy. (abedon.1@osu.edu)
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phage.org/terms/phage_population.html · Abedon’s Books · DOI: 10.5281/zenodo.20173633
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Clearly two clonally related phages that occupy the same immediate environment should be considered to be part of the same population if in fact they are capable of recombining genetically given coinfection.
For two phages that are either not clonally related or otherwise display substantial sequence divergence, then assignment to the same population will be dependent on opportunity for successful recombination, that is, sexually producing viable progeny.
A concern arises to the extent that a given phage may be reasonably assigned to more than one population. That is, the concept of population, and particularly as applied to clonal organisms, possesses some ambiguity and as a consequence so does the concept of a phage population.
If phages should be incapable of genetic recombination, then their populations in general would be defined similarly to that of purely clonal organisms.
Abedon, S.T. (2026). Phage Terms. https://terms.phage.org · 10.5281/zenodo.20173633
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