. Contributions to the genetics of Drosophila melanogaster. Drosophila melanogaster; Heredity; Karyokinesis. 42 THE ORIGIN OF GYNANDROMORPHS. one X with eosin and miniature genes to produce the male parts, which in this case affected visibly only a part of the left eye. w^ in w" in No. M, 114. January 23, 1914. C. B. Bridges. Text-figure 22 (diagram). Parentage.—One of the X chromosomes of the mother contained the gene for eosin, the other the gene for bar. The father was white bar. Both parents were heterozygous for the autosomal recessive gene "whiting," which is a specific mo
. Contributions to the genetics of Drosophila melanogaster. Drosophila melanogaster; Heredity; Karyokinesis. 42 THE ORIGIN OF GYNANDROMORPHS. one X with eosin and miniature genes to produce the male parts, which in this case affected visibly only a part of the left eye. w^ in w" in No. M, 114. January 23, 1914. C. B. Bridges. Text-figure 22 (diagram). Parentage.—One of the X chromosomes of the mother contained the gene for eosin, the other the gene for bar. The father was white bar. Both parents were heterozygous for the autosomal recessive gene "whiting," which is a specific modifier of eosin. Description.—The gynandromorph was somewhat more than half female. The left side of the gynan- dromorph, except for the head, was male, with sex- comb, smaller bristles half-thorax and wing. In col- oration the abdomen was male on the left and female on the right. The genitalia were entirely female. The head had heterozygous bar (female) eyes, which were white-eosin compound (female) in color. A pair of ovaries was present. Explanation.—An egg containing the X chromo- some with the gene for eosin was fertilized by the X sperm with the genes for white and for bar. Either chromosome may have been the one to suffer elimination; which one it was could not be determined, since the head did not show male parts. No. 438. August 16, 1914. C. B. Bridges. figure 23 (diagram). Text-. 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 Carnegie Institution of Washington; Morgan, Thomas Hunt, 1866-1945; Bridges, Calvin B. (Calvin Blackman), 1889-1938; Sturtevant, A. H. (Alfred Henry), 1891-1970. Washington, Carnegie Institution of Washington
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