. Cell heredity. Cytogenetics. 250 c/ CELL HEREDITY. and o denote chromosomal gene pair 1] and ij (iojap). Colorless letha FIGURE Nonchromosomal inheritance of striping in higher plants, so-called sfafus albomaculafus. In reciprocal crosses between normal green and striped plants, when the genotype of the progeny is determined by the female parent, the genetic factor responsible for striping is nonchromosomal. When the female parent is normal green, the striping phenotype disappears; all progeny are green, and chromosomal genes segregate normally in the F,, generation. When the female par
. Cell heredity. Cytogenetics. 250 c/ CELL HEREDITY. and o denote chromosomal gene pair 1] and ij (iojap). Colorless letha FIGURE Nonchromosomal inheritance of striping in higher plants, so-called sfafus albomaculafus. In reciprocal crosses between normal green and striped plants, when the genotype of the progeny is determined by the female parent, the genetic factor responsible for striping is nonchromosomal. When the female parent is normal green, the striping phenotype disappears; all progeny are green, and chromosomal genes segregate normally in the F,, generation. When the female parent is striped, three classes of progeny appear in the F,: colorless, striped, and green with variable fre- quencies. When the striped F, plants are self-pollinated, or crossed to any male, again three classes of progeny are found in variable proportions with chromosomal genes segregating normally (after Rhoades, 1946, C. S. H. Symp. Quanf. Biol., 1 1:202). eration after generation, and clearly cannot be accounted for on a chromosomal basis. Further evidence of the nonchromosomal determination of striping comes from a study of somatic segregation. In maize, for example, the. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Sager, Ruth; Ryan, Francis J. (Francis Joseph), 1916-. New York, Wiley
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