. A critique of the theory of evolution. Evolution. THEORY OF EVOLUTION 71 fects as well. The females are almost com- pletely sterile, while the males are fertile. The viability of the stock is poor. When flies with rudimentary wings are put into competition. Fig. 34. Mutant race of fruit fly, calU-d rudimentary. with wild flies relatively few of the rudimentary flies come through, especially if the culture is crowded. The hind legs are also sliortened. All of these effects are the results of a single factor-difference. One may venture the guess tliat some of the specific and varietal differen
. A critique of the theory of evolution. Evolution. THEORY OF EVOLUTION 71 fects as well. The females are almost com- pletely sterile, while the males are fertile. The viability of the stock is poor. When flies with rudimentary wings are put into competition. Fig. 34. Mutant race of fruit fly, calU-d rudimentary. with wild flies relatively few of the rudimentary flies come through, especially if the culture is crowded. The hind legs are also sliortened. All of these effects are the results of a single factor-difference. One may venture the guess tliat some of the specific and varietal differences that are char-. 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
