. Contributions to the genetics of Drosophila melanogaster. Drosophila melanogaster; Heredity; Karyokinesis. 56 THE ORIGIN OF GYNANDROMORPHS. The genitalia were largely male, but had female parts on the right side. A pair of rudimentary ovaries were present. There were sex-combs on both forelegs, so that the ventral side of the thorax was entirely male. The fly was tan throughout. Explanations.—An egg containing a cross-over chromosome with the genes for notch, tan, and vermilion was fertilized by an X sperm carrying eosin, tan, and vermihon. Elimination of the maternal X was followed by shift
. Contributions to the genetics of Drosophila melanogaster. Drosophila melanogaster; Heredity; Karyokinesis. 56 THE ORIGIN OF GYNANDROMORPHS. The genitalia were largely male, but had female parts on the right side. A pair of rudimentary ovaries were present. There were sex-combs on both forelegs, so that the ventral side of the thorax was entirely male. The fly was tan throughout. Explanations.—An egg containing a cross-over chromosome with the genes for notch, tan, and vermilion was fertilized by an X sperm carrying eosin, tan, and vermihon. Elimination of the maternal X was followed by shifting of the cleavage nuclei. N t w" t w^ t No. 983. December 20,1914. Bridges. Text-figure 47 (diagram). Parentage.—One of the X chromosomes of the mother carried the genes for white and for bar, and the other X the gene for eosin. The father was miniature. Description.—The separation of the sex-characters is very complex. The dorsal parts of the thorax and the wings are, from their size, female; the lower. Text-figure 45. TEXT-riGURE 46. Text-figure 47. part of the thorax, from the presence of sex-combs on both forelegs, is male. The abdomen is female on the left half and male on the right. The genitalia are female. The abdomen contained a pair of ovaries as seen through the body-wall and in sections. The fly was sterile. The head was entirely male, with white eyes, 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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Keywords: ., bookcentury1900, bookdecade1910, booksubjectkaryoki, bookyear1919
