Heredity and sex . Fig. 76. — Papilio Memnon. 1, male; 2, 3, 4, three types of females. (After Meijere.) that the heredity of the secondary sexual characterscan be studied quite apart from the influence of thesex glands. How, then, are they inherited so that theyappear in one sex and not in the other sex? Withinthe last two or three years the inheritance of the second-ary sexual differences in insects has been studied. First, there is the case of the clover butterfly, Coliasphilodice, that Gerould has worked out, where there THE EFFECTS OF CASTRATION 151 are two types of females and one kind o
Heredity and sex . Fig. 76. — Papilio Memnon. 1, male; 2, 3, 4, three types of females. (After Meijere.) that the heredity of the secondary sexual characterscan be studied quite apart from the influence of thesex glands. How, then, are they inherited so that theyappear in one sex and not in the other sex? Withinthe last two or three years the inheritance of the second-ary sexual differences in insects has been studied. First, there is the case of the clover butterfly, Coliasphilodice, that Gerould has worked out, where there THE EFFECTS OF CASTRATION 151 are two types of females and one kind of male(Fig. 66). Without giving the analysis of this case I may saythat the results can be explained on a Mendelian peculiar feature of Geroulds explanation is thattwo doses of the yellow-producing determiner in thefemale give yellow color — one dose gives white. Inthe male, on the other hand, one dose of yellow givesyellow. The second case is that of Papilio memnon, worked outby de Meij ere from the
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Keywords: ., boo, bookcentury1900, bookdecade1910, booksubjectsex, bookyear1913
