TABLE 1

Summary information for D. melanogaster and D. simulans population samples

PopulationnaNo. of sitesbScθwπTajima's DRMdChudw
D. melanogaster
Standard alleles
Costa Rica11987430.0150.0222.300.13
Florida City11985510.0180.0210.760.28
Yeppoon7957480.0210.0210.142.29
Zimbabwe6927360.0170.015−0.739.00
CRSe
Costa Rica14742330.0140.0212.000.14
Florida City13742370.0160.0160.240.19
Yeppoon9729340.0170.0180.220.52
Zimbabwe7688210.0130.012−0.410.23
D. simulans
Maryland11881790.0310.0350.730.45
  • a Number of sampled chromosomes.

  • b Number of sites excluding alignment gaps in the sample.

  • c All biallelic segregating mutations including insertion-deletion polymorphism.

  • d Minimum number of recombination events in the sample (Hudson and Kaplan 1985).

  • e Constructed random samples based on In(2L)t frequencies estimated in each population (Costa Rica 20.8%; Florida City 25.0%; Yeppoon 22.9%; Zimbabwe 58.2%; Andolfatto et al. 1999).