Repeated Geographic Variation at Three Enzyme Loci in the Amphipod Platorchestia Platensis.

1983. Organization of ribosomal DNA in yellow lupine (Lupinus luteus) and sequence of the 5.8S RNA gene. FEBS Lett. 152:241-246. REEDER, R. H. 1984. Enhancers and ribosomal gene spacers. Cell 38:349-351. ROGERS, S. O., S. HONDA, AND A. J. BENDICH. 1986. Variation in the ribosomal RNA genes among individuals of Vicia faba. Plant Molec. Biol. 6:339345. SAGHAI-MAROOF, M. A., K. M. SOLIMAN, R. A. JORGENSEN, AND R. W. ALLARD. 1984. Ribosomal spacer length polymorphisms in barley: Mendelian inheritance, chromosomal location, and population dynamics. Proc. Nat. Acad. Sci. USA 81:8014-8018. ScHAAL, B. A. 1974. Isolation by distance in Liatris cylindracea. Nature 252:703. SOKAL, R. R., AND F. J. ROHLF. 1981. Biometry. Freeman, San Francisco, CA. SYTSMA, K. J., AND B. A. SCHAAL. 1985. Phylogenetics of the Lisianthius kinneri (Gentianaceae) species complex in Panama utilizing DNA restriction fragment analysis. Evolution 39:594-608. TANAKA, Y., T. A. DYER, AND G. G. BROWNLEE. 1980. An improved direct RNA sequence method: Its application to Viciafaba 5.8S ribosomal RNA. Nucl. Acids Res. 8:1259-1272. TRECo, D., E. BROWNELL, AND N. ARNHEIM. 1982. The ribosomal gene nontranscribed spacer, pp. 101126. In H. Busch and L. Rothblum (eds.), The Cell Nucleus, Vol. XII. Academic Press, N.Y. TURNER, M. E., J. C. STEPHENS, AND W. W. ANDERSON. 1982. Homozygosity and patch structure in plant populations as a result of nearest-neighbor pollination. Proc. Nat. Acad. Sci. USA 79:203-207. WRIGHT, S. 1943. An analysis of local variability of flower color in Linanthus parryae. Genetics 28:139156. YAKURA, K., A. KATO, AND S. TANIFUJI. 1983. Structural organization of ribosomal DNA in four Trillium species and Paris verticillata. Plant Cell Physiol. 24:1231-1240. 1984. Length heterogeneity of the large spacer of Viciafaba rDNA is due to the differing number of a 325 bp repetitive sequence elements. Molec. Gen. Genet. 193:400-405.