A neutral theory of genome evolution and the frequency distribution of genes

BMC Genomics

Table 2 Parameter values of model fits

	model A	model B		model C		model D
	θ	θ ₀	β	θ₁ (λ₁)	θ₂ ( λ₂)	θ₁ (λ₁)	θ₂ (λ₂)
B. anthracis	0.10	6.9	490	0.30 (0.41)	0 (0.59)	∞ (0.03)	0.06 (0.97)
E. coli	0.44	2.1	17	1.77 (0.46)	0 (0.54)	12 (0.15)	0.15 (0.85)
Staph. aureus	0.24	0.87	10	0.92 (0.42)	0 (0.58)	14 (0.07)	0.12 (0.93)
Strep. pneumonia	0.48	1.94	17	1.47 (0.53)	0 (0.47)	41 (0.08)	0.20 (0.92)
Strep. pyogenes	0.33	1.93	23	0.57 (0.68)	0 (0.32)	40 (0.06)	0.20 (0.94)
N. meningitidis	0.50	3.5	30	1.72 (0.52)	0 (0.48)	15 (0.16)	0.19 (0.84)

We determined for each of the four models A, B, C and D the parameters that minimize the distance Δ, see Eq. (6), between the empirical and the theoretical gene frequency distribution. Here we report the gene transfer parameter θ of the model A fit, the gene transfer parameter θ₀ and the population growth parameter β of the model B fit, the genome fractions λ₁ and λ₂, and the gene transfer parameter θ₁ of the model C fit, and the genome fractions λ₁ and λ₂, and the gene transfer parameters θ₁ and θ₂ of the model D fit.

ISSN: 1471-2164