. Contributions to the genetics of Drosophila melanogaster. Drosophila melanogaster; Heredity; Karyokinesis. Text-fiqure 22. The X chromosome of Text-figure 23. W Parentage.—One X chro- mosome of the mother con- tained the genes for eosin and for vermilion, the other X the gene for white eyes, the male carried the gene for eosin. Description.—The left side of the gynandromorph was largely male with a white eye (containing a fleck of white-eosin), a sex-comb, and a shorter wing. The right side was female, with a white-eosin com- pound eye, no sex-comb, and a longer wing. The abdomen was banded
. Contributions to the genetics of Drosophila melanogaster. Drosophila melanogaster; Heredity; Karyokinesis. Text-fiqure 22. The X chromosome of Text-figure 23. W Parentage.—One X chro- mosome of the mother con- tained the genes for eosin and for vermilion, the other X the gene for white eyes, the male carried the gene for eosin. Description.—The left side of the gynandromorph was largely male with a white eye (containing a fleck of white-eosin), a sex-comb, and a shorter wing. The right side was female, with a white-eosin com- pound eye, no sex-comb, and a longer wing. The abdomen was banded like a female. When bred as a female the fly gave the classes expected for a white-eosin compound. No sections were made. Explanation.—An egg containing the X chromo- some with the gene for white was fertilized by an X sperm carrying the gene for eosin. The latter—the paternal chromosome—suffered elimination, leaving the white-bearing X to produce the male side. The color of the eye on the female side was white-eosin compound, which is the expected result for the two X's involved. ?/' W. 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
