. A critique of the theory of evolution. Evolution. THEORY OF EVOLUTION 69 The preceding cases have all involved rather great changes in some one organ of the body. The following three cases involve slight changes, and yet follow the same laws of inheri- tance as do the larger changes. At the base of tlie wings a minute black speck appeared (fig. 32). It was found to be a Mendelian character. In another case the spines on the tliorax became forked or kinky. Fig. 33. Mutant rac-c of fruit fly called clul). The often remain unexpanded and two bristles i)resent in wild fly (h) are absent
. A critique of the theory of evolution. Evolution. THEORY OF EVOLUTION 69 The preceding cases have all involved rather great changes in some one organ of the body. The following three cases involve slight changes, and yet follow the same laws of inheri- tance as do the larger changes. At the base of tlie wings a minute black speck appeared (fig. 32). It was found to be a Mendelian character. In another case the spines on the tliorax became forked or kinky. Fig. 33. Mutant rac-c of fruit fly called clul). The often remain unexpanded and two bristles i)resent in wild fly (h) are absent on side of thorax (c). (fig. o3h). Tliis stock breeds true, and the character is inherited in strictly ^lendelian fashion. In a certain stock a number of flies aj^j^eared. 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 Morgan, Thomas Hunt, 1866-; Princeton University. Louis Clark Vanuxem Foundation. Princeton University Press; [etc. ]
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectevoluti, bookyear1916
