. Carnegie Institution of Washington publication. SEX-LINKED INHERITANCE IN DROSOPHILA. which we could use as an index, but, so far as we have been able to see, there is no such constant accessory character in the case of the dot. Unlike club, dot is markedly sex-limited in its effect; that is, there is a difference of expression of the gen in the male and female. This difference recalls the sexual dimorphism of the eosin eye. BOW. In an F2 generation from rudimentary males by wild females there appeared, August 15, 1912, a single male whose wings instead of being flat were turned down over th
. Carnegie Institution of Washington publication. SEX-LINKED INHERITANCE IN DROSOPHILA. which we could use as an index, but, so far as we have been able to see, there is no such constant accessory character in the case of the dot. Unlike club, dot is markedly sex-limited in its effect; that is, there is a difference of expression of the gen in the male and female. This difference recalls the sexual dimorphism of the eosin eye. BOW. In an F2 generation from rudimentary males by wild females there appeared, August 15, 1912, a single male whose wings instead of being flat were turned down over the abdomen (fig. c). The curvature was uniform throughout the length of the wing. A previous mutation, arc, of this same type had been found to be a recessive character in the second group. The new mutation, bow, is less extreme than arc and is more variable in the amount of curvature. When the bow male was mated to wild females the offspring had straight FIG. C.—Bow wing. TABLE 21.—PI bow & <? X wild 9 9 . First generation. Second generation. Reference. Wild-type 9 9. Wild-type 0*0*. Reference. Wild-type 9 9". Wild-type cfcf- Bow <?<?. 17 17 18! 193 182 HS 100 67 49 21 I Total . 375 245 116. 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. Washington, Carnegie Institution of Washington
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