Heat-Induced Triploidy in the Newt, Triturus Viridescens
نویسندگان
چکیده
منابع مشابه
A Pentaploid Larva of the Newt, Triturus Viridescens.
proportions proceeds differentially in the first or in the second and third dimensions. 1 Castle, W. E., Proc. Nat. Acad. Sci., 10, 19-22 and 181-182 (1924). 2 Sumner, F. B., Ibid., 10, 178-180 (1924). Castle, W. E., Carnegie Inst. Pubi., No. 320 (1922). 'Cohen, J. I., Nature, 144 944 (1939). Cohen, J. I., J. Mental Science, 86, No. 362 (1940). 6 Pearl, R., Constitution and Health, London, Kega...
متن کاملInduction of accessory limbs and of sarcoma in the Newt (Triturus viridescens) with carcinogenic substances.
Among adult vertebrates, only some of the amphibia are capable of regenerating their limbs. Several years ago experiments were begun in an attempt to induce neoplasia in limb tissues capable of such regeneration. The common newt, Triturus viridescens, was used because of its hardiness and availability. The injection of a variety of supposedly carcinogenic substances into the forelimb of over 50...
متن کاملImmunochemical studies of muscle proteins in mature and regenerating limbs of the adult newt, Triturus viridescens.
QUALITATIVE and quantitative changes which occur in proteins and other macromolecules during differentiation and growth in embryonic development may be detected and defined by immunochemical means (Ebert, 1954, 1959). Similar changes must also occur during regeneration of a part, such as the limb of the salamander, since, after an initial period of cellular breakdown and 'dedifferentiation', re...
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HE very specialized meiotic events that occur in all sexually reproducing organisms have not been investigated in any great detail by means of high resolution tritium autoradiography. Most of the work so far has been done with animals because of technical difficulties in obtaining uptake of labelled nucleosides in the microsporocytes of plants (TAKATS 1962). LIMA-DE-FARIA (1959, 1961,1962) has ...
متن کاملThe “False Breeding Season” of the Eastern Newt, Notophthalmus viridescens
The terrestrial red eft stage is so different from the body form of the aquatic adult of the eastern newt that the two were considered separate species for nearly 60 years. Some populations lack the eft stage whereas in other populations the adults are aquatic only during the breeding season. In populations in which the adults are permanently aquatic or migrate to breeding ponds in fall, an aut...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1942
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.28.10.436