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Table 2 Ratio of rates of significantly different single-nucleotide substitutions between D. saltans/willistoni and D. melanogaster

From: Minor shift in background substitutional patterns in the Drosophila saltans and willistoni lineages is insufficient to explain GC content of coding sequences

 

T:A->C:G r

C:G->T:A

Minimum fixation bias*

T:A->G:C

G:C->T:A

Minimum fixation bias*

Ratio of rates in saltans/willistoni and D. melanogaster (Euchromatic DNAREP1_DM)

1.23 (0.13)**

1.43 (0.12)

N e s(mel) = -4.76

N e s(saltans) = -4.85

0.47 (0.10)

0.71 (0.11)

N e s(mel) = 2.86

N e s(saltans) = 2.98

Ratio of rates in saltans/willistoni and D. melanogaster (Heterochromatic DNAREP1_DM)

1.33 (0.13)

1.43 (0.12)

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0.21 (0.003)

0.15 (0.002)

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  1. * Fixation bias is measured in the effective strength of natural selection (product of effective population size and selection coefficient) that would generate such a bias. Positive sign implies preference for A:T pairs and negative sign implies preference toward G:C pairs.
  2. ** The number in parentheses is the standard error.