. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 20 SARANE THOMPSON BOWEN DIFFERENTIAL SEGMENT HOMOLOGOUS SEGMENT SEX LOCUS WHITE LOCUS Y X FIGURE 2. Diagram of the sex chromosomes of Artemia. Crossing over may occur between the white locus and the sex locus. poecilus) macidatus (Gordon, 1937, 1947; reviewed by Bellamy and Queal, 1950). Crossover of a gene from the X to the Y chromosome has also been reported at the bobbed locus of Drosophila uielanogaster (Stern, 1929; Neuhaus, 1937). Al- though many characteristics in the human have been reported to be partially sex- lin
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 20 SARANE THOMPSON BOWEN DIFFERENTIAL SEGMENT HOMOLOGOUS SEGMENT SEX LOCUS WHITE LOCUS Y X FIGURE 2. Diagram of the sex chromosomes of Artemia. Crossing over may occur between the white locus and the sex locus. poecilus) macidatus (Gordon, 1937, 1947; reviewed by Bellamy and Queal, 1950). Crossover of a gene from the X to the Y chromosome has also been reported at the bobbed locus of Drosophila uielanogaster (Stern, 1929; Neuhaus, 1937). Al- though many characteristics in the human have been reported to be partially sex- linked, Morton (1957) has found that in every instance the data fell short of statistical significance. EXPLANATION OF THE EXPERIMENTAL RESULTS In Figure 3 the hypothesis of partial sex-linkage is applied to two experiments. On the left is a pedigree which describes Experiment A. If a white male is mated white wild (homozygous) white wild (F,) wild wild white. wild white wild wild wild white wild FIGURE 3. Sex-linked inheritance in Artemia. Squares represent males; circles represent females. The phenotype of each class is written beneath the symbol. The X and Y chromosomes are shown as in Figure 2. Crossing over between the X and Y does not occur in these two 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 Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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