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Related Experiment Video

Updated: Jul 8, 2026

Quantitative PCR of T7 Bacteriophage from Biopanning

Quantitative PCR of T7 Bacteriophage from Biopanning

Published on: September 27, 2018

Predicting evolution from genomics: experimental evolution of bacteriophage T7.

J J Bull¹, I J Molineux

¹Integrative Biology, Institute for Cellular and Molecular Biology, University of Texas, Austin, TX, USA. bull@mail.utexas.edu

|January 24, 2008

Summary

Experimental evolution studies using bacteriophage T7 leverage its molecular biology for adaptation insights. While some evolutionary pathways can be predicted, many outcomes remain complex and unexpected.

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Area of Science:

Molecular biology
Evolutionary biology
Microbial genetics

Background:

Bacteriophage T7, with its small genome and host Escherichia coli's resources, is ideal for experimental evolution.
Genetic manipulation of T7 allows for targeted studies on compensatory evolution and fitness recovery.
Previous research has explored adaptations to specific environments to understand molecular bases of evolution.

Purpose of the Study:

To investigate the predictability of evolutionary pathways in bacteriophage T7 adaptations.
To explore the molecular mechanisms underlying compensatory evolution in T7.
To assess the extent to which T7 biology can rationalize observed evolutionary changes.

Main Methods:

Designing and interpreting experimental evolution studies with bacteriophage T7.
Modifying the T7 genome (gene knockouts, replacements, reordering).
Adapting T7 to specific environmental conditions to select for quantitative phenotypic outcomes.

Main Results:

Approximately one-third to one-half of observed compensatory nucleotide changes can be rationalized by T7 biology.
Rationalization often remains at the genetic level, with limited understanding of activity changes.
Adaptations sometimes yield completely unexpected outcomes, confounding predictions.

Conclusions:

Experimental evolution with T7 provides valuable insights into adaptation mechanisms.
Predicting evolutionary pathways remains challenging, despite advances in understanding T7 biology.
Further research is needed to fully elucidate the molecular basis of phage adaptation and evolution.