Download e-book for kindle: Amphibian Cytogenetics and Evolution by David M. Green, Stanley K. Sessions

By David M. Green, Stanley K. Sessions

ISBN-10: 0122978803

ISBN-13: 9780122978807

This e-book seems at a time whilst molecular cytogenetics is located to make an important impression upon evolutionary stories, permitting difficulties of chromosomal constitution and alter to be severely assessed. it truly is an up to date and accomplished survey of the cytogenetics of a huge classification of animals, together with all 3 amphibian orders, with chapters authored via overseas leaders within the field.
Amphibian Cytogenetics and Evolution may be of curiosity to classical and molecular cytogeneticists, systematicists, evolutionary biologists, herpetologists, and an individual utilizing amphibians in genetic research.

  • Offers the one present and accomplished survey of amphibian cytogenetics
  • Gives authoritative and in-depth assurance of subject matters of current interest
  • Reviews normal cytogenetic topics
  • Presents new insights into evolutionary alterations in chromosome constitution and amphibian phylogeny and relationships including: Phylogenetic research of chromosome data, Current ideas of cytogenetic analysis, Examination of all 3 amphibian orders

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Extra resources for Amphibian Cytogenetics and Evolution

Sample text

The diploid number is the same (42), and the details of the karyotype differ only in that chromsome No. 3 of/. glutinosus is not strictly telocentric, as was indicated by Seshachar for /. beddomei, No. 6 is metacentric rather than submetacentric, and the 3 largest of the 15 rods and dots (Nos. 7-9) are metacentric rather than telocentric. Some of these differences may reflect differences in technique; Seshachar used a sectioning method, whereas Nussbaum and Treisman used squash methods. Nussbaum and Treisman (1981) also described the karyotype of Ichthyophis kohtaoensis, a species from Thailand, based on squashes of gut epithelium and testis.

Elayidom et al. (1963) published photomicrographs of spermatogonial metaphases of U. menoni illustrating well-spread, highly condensed chromosomes; however, they did not describe other aspects of spermatogenesis. 3. FAMILY CAECILIAIDAE From sections of testis, Seshachar (1942) described aspects of spermatogenesis in Schistometopum gregorii (East African) and Siphonops annulatus (South American). Seshachar reported that the first stages of meiosis are very similar to those of/, beddomei and U. narayani, which he had described earlier.

2. The Phyloseny of Amphibians 31 von Huene, F. (1956). " Fischer, Jena. Wake, D. , Maxson, L. , and Wurst, G. Z. (1978). Genetic differentiation, albumin evolution, and their geographic implications in plethodontid salamanders of California and southern Europe. Evolution 32, 529-539. Wake, M. H. (1977). Fetal maintenance and its evolutionary significance in the Amphibia: Gymnophiona. J. Herpetol. 11, 379-386. Wake, M. , and Case, S. M. (1975). The chromosomes of caecilians. Copeia 1975,510-516.

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Amphibian Cytogenetics and Evolution by David M. Green, Stanley K. Sessions

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