Fig. 1. Inter- and intraspecific variation of basal thermotolerance in D. virilis group species. Strain 160, although D. virilis, is a marker strain with at least one known recessive mutation on each chromosome; all other strains are wild-type. See Table 1 for additional descriptions of all strains. Data for D. lummei strain 200 and D. virilis strains 9, 160 and 1433 are replotted from Garbuz et al. (2002), in which D. virilis strain 1433 is mistakenly labeled strain 1590.

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