. Contributions to the genetics of Drosophila melanogaster. Drosophila melanogaster; Heredity; Karyokinesis. THE ORIGIN OF GYNANDROMORPHS. 63 to male parts, which, because of the lateness of the occurrence, or from shift- ing of nuclei, constituted but a small part of the gynandromorph. Zygote. V 1 / 1 X X X Left side. X liiyhl side. f 1 1 X X B B No. 2349. November 3. 1915. C. B. Bridges. Text-figure 52 (drawing). Parentage.—The mother was from a strain of high non-<lisjunction, but was known to be XX and not XXY. One X carried the genes for vermilion and forked, the other X the gene for b
. Contributions to the genetics of Drosophila melanogaster. Drosophila melanogaster; Heredity; Karyokinesis. THE ORIGIN OF GYNANDROMORPHS. 63 to male parts, which, because of the lateness of the occurrence, or from shift- ing of nuclei, constituted but a small part of the gynandromorph. Zygote. V 1 / 1 X X X Left side. X liiyhl side. f 1 1 X X B B No. 2349. November 3. 1915. C. B. Bridges. Text-figure 52 (drawing). Parentage.—The mother was from a strain of high non-<lisjunction, but was known to be XX and not XXY. One X carried the genes for vermilion and forked, the other X the gene for bar. The father was a vermilion forked male. Description.—The gynandromorph was largely male. The female parts included the left legs, which were without a sex-comb and had forked bristles. The female parts throughout had forked bristles and could therefore be readily traced. All three left legs were forked and female to the mid-ventral line. A very narrow strip of female tissue ran diagonally forward from above. Text-figuke 52. Text-figure 53. the middle left leg to the shoulder, being chiefly marked by one large forked bristle and several smaller ones. Most of the left side of the head bore forked bristles, including the left antenna, the dorsal region to the left of the line in the diagram, a small zone of tissue around the eye to the rear, and the region below the eye including the oral bristles. The left eye was red (not vermilion) and round (not bar or heterozygous bar—the small nick seen in the drawing of the eye seems to be an artifact). The abdomen was male type, the genitalia. 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
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectkaryoki, bookyear1919
