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letter
. 2009 Sep 2;1:320–324. doi: 10.1093/gbe/evp031

Table 2.

Empirical Genomic Scan Results Compared with Expectations under Estimated RHH Models for Drosophila

Region Sizea No. of markersb Fraction Sweptc E (fraction) | ∼20% Reductiond E (fraction) | ∼50% Reductione E (no. of sweeps | s = 1 × 10−2, 2Nλ=1 × 10−5)f,g E (no. of sweeps | s = 2 × 10−3, 2Nλ = 2 × 10−4)g,h,i E (no. of sweeps | s = 1 × 10−5, 2Nλ = 3 × 10−3)g,j
256 kbk 26 0.12 0.007 0.017 ∼1 ∼68 ∼900
850 kbl 28 0.07 0.007 0.017 ∼3 ∼225 ∼3,060
17 Mbm 105 0.12 0.007 0.017 ∼61 ∼4,620 ∼61,200
a

Total length of the region spanned by the scan.

b

The number of scanned markers used in the study.

c

The fraction of scanned markers proposed by the authors to be linked to selective sweeps.

d

The expected fraction of markers that would fall in swept regions, for a ∼20% estimated reduction in variability (Andolfatto 2007; Macpherson et al. 2007).

e

The expected fraction of markers that would fall in swept regions, for a ∼50% estimated reduction in variability (Jensen, Thornton, and Andolfatto 2008; Li and Stephan 2006).

f

The expected number of sweeps that would fall in the sequenced regions within the last 0.1 4N generations, for parameters estimated by Macpherson et al. (2007) for D. simulans.

g

Only a fraction of this expected number may be identifiable, owing to the imperfect power of existing test statistics—see figure 2 (Przeworski 2002; Jensen, Thornton, and Aquadro 2008).

h

The expected number of sweeps that would fall in the sequenced regions within the last 0.1 4N generations, for parameters estimated by Jensen, Thornton, and Andolfatto (2008) for D. melanogaster

i

The expected number of sweeps that would fall in the sequenced regions within the last 0.1 4N generations, for parameters estimated by Li and Stephan (2006) for D. melanogaster.

j

The expected number of sweeps that would fall in the sequenced regions within the last 0.1 4N generations, for parameters estimated by Andolfatto (2007) for D. melanogaster.

k

From Bauer DuMont and Aquadro (2005); Jensen et al. (2007) for an X-linked region of D. melanogaster.

l

From Harr et al. (2002) for an X-linked region of D. melanogaster.

m

From Glinka et al. (2003) for an X-linked region of D. melanogaster.