Fig. 4.

Relative abundance of phage-derived genes and transcripts to bacterial genes and transcripts. (A) Mean copy number of phage genes relative to the single copy bacterial chromosomal gene dnaK; range of values from three samples are indicated. Measurements made on two aphid clones infected with the same H. defensa strain. (B) Mean transcript abundance of phage genes relative to transcript abundance of the highly expressed bacterial gene dnaK; range of values from four samples are indicated.