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Full-Text Articles in Social and Behavioral Sciences
Coming To Terms With Heritability, Scott F. Stoltenberg
Coming To Terms With Heritability, Scott F. Stoltenberg
Department of Psychology: Faculty Publications
The complex mechanisms of heredity are little appreciated by nonspecialists, in some measure, because of misunderstandings that are perpetuated when words used for technical terms have other, more widely understood, folk meanings. When a word has both technical and folk meanings, it is the responsibility of the specialist to avoid promoting confusion by either using extremely cautious and precise language when using the term or, in cases when confusion is inevitable, abandoning the term in favor of one without a widely understood folk meaning. The study of heredity is beset by such confusion, and the term heritability appears to be …
Y-Chromosome Effects On Drosophila Geotaxis Interact With Genetic Or Cytoplasmic Background, Scott F. Stoltenberg, Jerry Hirsch
Y-Chromosome Effects On Drosophila Geotaxis Interact With Genetic Or Cytoplasmic Background, Scott F. Stoltenberg, Jerry Hirsch
Department of Psychology: Faculty Publications
Previously, all of the major fruit fly, Drosophila melanogaster, chromosomes (I, II, and III) have been shown to be associated with geotaxis, but the Y chromosome has not. Using two methods (back-crossing and chromosome substitution), Y chromosomes from lines that have evolved stable, extreme expressions of geotaxis were placed into different genetic and cytoplasmic backgrounds to test the resulting males for geotaxis. The results of the back-crossing do not support the interpretation of Y-chromosome effects on geotaxis. These tests do not have sufficient statistical power, however, to detect small genetic effects. In the chromosome substitution experiment, the geotaxis-line Y …