. Biology of the vertebrates : a comparative study of man and his animal allies. Vertebrates; Vertebrates -- Anatomy; Anatomy, Comparative. The Development of the Individual 179 It has been discovered that it is possible to transplant a bit of one em- bryo to an unnatural position in another embryo, and that the transplant carries out its original structural tradition even in the unnatural surround- ings of its host's body. For example, the embryonic bud of a tadpole destined normally to grow into a leg, when transplanted to the back of another tadpole, will still carry out its original design
. Biology of the vertebrates : a comparative study of man and his animal allies. Vertebrates; Vertebrates -- Anatomy; Anatomy, Comparative. The Development of the Individual 179 It has been discovered that it is possible to transplant a bit of one em- bryo to an unnatural position in another embryo, and that the transplant carries out its original structural tradition even in the unnatural surround- ings of its host's body. For example, the embryonic bud of a tadpole destined normally to grow into a leg, when transplanted to the back of another tadpole, will still carry out its original design and form a leg, even in so bizarre a location. If one blastomere of a frog's egg, when it is in the two-cell stage of cleavage, is killed by stabbing the nucleus with a hot needle, the other blastomere will carry on and develop a hemi-embryo which may eventually restore the missing half embryo and complete the pattern of the entire embryo (Fig. 136).. 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 Walter, Herbert Eugene, b. 1867; Sayles, Leonard Perkins, 1902-. New York : Macmillan Co.
Size: 2392px × 1045px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, booksubjectanatomycomparative, booksubjectverte
