Figure 6.

Phylogeny of the third chromosome gene arrangements of D. pseudoobscura and D. persimilis. The D. pseudoobscura gene arrangements are: AM, Amecameca; AF, American Fork; AR, Arrowhead; BE, Berkeley; CH, Chiricahua; CC, Cochise; CU, Cuernavaca; EB, East Bay; EP, Estes Park; FC, Fort Collins; HI, Hidalgo; HY, Hypothetical; IZ, Iztaccihuatl; LL, Los Lirios; MA, Mammoth; MI, Michoacan; MF, Miraflores; OA, Oaxaca; OL, Olympic; OZ, Ozumba; PA, Patzcuaro; PX, Paxtepec; PP, Pikes Peak; PI, Pinon; PO, Popocatepetl; SA, San Antonio; SJ, San Jacinto; SB, Santa Barbara; SC, Santa Cruz; SO, Sonoita; ST, Standard; TA, Tarasco; TE, Texas; TH, Thomas; TL, Tree Line; TU, Tulancingo; TZ, Tzintzuntzan; UR, Uruapan; VA, Vandeventer; and ZI, Zirahuen (Anderson, Dobzhansky, Pavlovsky, Powell, & Yardley, 1975; Crumpacker & Kastritsis, 1967; Dobzhansky, 1944; Dobzhansky, 1948a; Dobzhansky et al., 1975; Epling & Lower, 1957; Espinoza-Velazquez & Salceda, 1981; Olvera et al., 1979; Olvera et al., 1985; Strickberger & Wills, 1966; Turner & Jeffery, 1977). The D. persimilis gene arrangements are: AT, Atwell Mill; CO, Cowichan; HU, Humboldt; JR, James Reserve; KL, Klamath; MR, Maple Ridge; MT, Mather; MN, Mendocino; NA, Nainaimo; RW, Redwoods; SE, Sequoia; ST, Standard; TP, Thetis Park; TU, Tuolumne; VI, Victoria; WA, Wawona; WE, Weott; and WH, Whitney (Anderson et al., 1975; Dobzhansky, 1944, 1948b; Dobzhansky & Sturtevant, 1938; Moore & Taylor, 1986; Spiess, 1950, 1965). The Hypothetical arrangement was demonstrated to be the ancestral arrangement based on adjacency information of genes that flank inversion breakpoints (see page 3 Supplemental Information, Table S3 and Figures S4-S23, Fuller et al., 2017)