Abstract
Allozyme inheritance and transmission genetics of 11 enzyme systems were determined in the permanent translocation heterozygotes Oenothera biennis, Oe. strigosa, and Oe. parviflora. Electrophoretic variation was examined first among 164 strains of structural heterozygotes. Allelic configurations were then judged from inheritance patterns in reciprocal F 1 hybrids between each of 22 ring-forming strains and tester strains of the related bivalent-formers, Oe. hookeri and Oe. grandiflora. Allozymes are inherited as codominant markers, and, as dictated by the genetic system, within a strain individual allelic variants are generally transmitted through only one germ line. Of the 20 loci resolved, only eight are polymorphic in any species, and, within species, generally only two alleles are present at each polymorphic locus. Despite the relatively meager allelic array, each of the 22 strains whose chromosome complexes were characterized is genotypically unique. Generally, within taxa, α (egg) and β (sperm) complexes differ in allele frequency at several polymorphic loci. Such variability is correlated with differences in the phylogenetic origins of complexes and not with differences in segmental arrangement within a group of related complexes.
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References
Cleland, R. E. (1972). Oenothera: Cytogenetics and Evolution, Academic Press, New York.
Levin, D. A. (1975). Genic heterozygosity and protein polymorphism among local populations of Oenothera biennis. Genetics 79477.
Levin, D. A., Howland, G. P., and Steiner, E. (1972). Protein polymorphism and genic heterozygosity in a population of the permanent translocation heterozygote, Oenothera biennis. Proc. Natl. Acad. Sci. 691475.
Levy, M., and Levin, D. A. (1975). Genic heterozygosity and variation in permanent translocation heterozygotes of the Oenothera biennis complex. Genetics 79493.
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The study was supported by NIH Training Grant in Genetics 5 TO 1 GM-00337-13.
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Levy, M., Steiner, E.E. & Levin, D.A. Allozyme genetics in permanent translocation heterozygotes of the Oenothera biennis complex. Biochem Genet 13, 487–500 (1975). https://doi.org/10.1007/BF00485790
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DOI: https://doi.org/10.1007/BF00485790