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

By David M. Green, Stanley K. Sessions

This e-book seems at a time whilst molecular cytogenetics is located to make an important influence upon evolutionary experiences, allowing difficulties of chromosomal constitution and alter to be seriously assessed. it's an up to date and entire survey of the cytogenetics of an enormous category of animals, together with all 3 amphibian orders, with chapters authored via foreign leaders within the field.
Amphibian Cytogenetics and Evolution might be of curiosity to classical and molecular cytogeneticists, systematicists, evolutionary biologists, herpetologists, and an individual utilizing amphibians in genetic research.

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

Show description

Read or Download Amphibian Cytogenetics and Evolution PDF

Best evolution books

The Britannica Guide to Genetics

From Gregor Mendel’s first experiments with peas through the eighteenth century to the statement of the Human Genome venture in 1998, genetics became the most important to cracking a number of the clinical rules of our age. How a lot do our genes ensure our personalities? What makes us assorted from different species?

Evolutionary Behavioral Ecology

Evolutionary Behavioral Ecology is meant for use as a textual content for graduate scholars and a sourcebook for pro scientists looking an knowing of the evolutionary and ecological procedures shaping habit throughout a wide range of organisms and a various set of behaviors. Chapters are written by way of prime specialists within the box, delivering a middle origin, a heritage of conceptual advancements, and clean perception into the controversies and subject matters shaping the continued improvement of the sphere.

Die Evolution des Auges - Ein Fotoshooting

Sehen und Gesehen werdenSpektakuläre, großformatige Fotos auf Doppelseiten mit einem Erklärungstext machen die Leser neugierig auf das, used to be die Evolution im Bereich der Augen hervorgebracht hat: unabhängig bewegbare Augen, Stielaugen, Pigmentbecher, Lochkameraaugen, Komplexaugen, … Das Buch kann in beliebiger Reihenfolge, Doppelseite für Doppelseite, gelesen werden.

Extra resources for Amphibian Cytogenetics and Evolution

Example text

Beddomei. 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.

Seshachar reported that the first stages of meiosis are very similar to those of/, beddomei and U. narayani, which he had described earlier. The leptotene threads have a polar "bouquet" orientation. The threads start to form at the pole while the remainder of the nucleus is granular. Later in leptotene, the chromatin is organized in threads throughout the nucleus, still with a polar orientation. The polar orientation lasts through pachytene, which is the longest stage of prophase I. The diffuse stage that Seshachar (1937b, 1939) had described for /.

It is possible to discuss chromosomal evolution of caecilians within this limited framework. For the purposes of this review, the classification of Nussbaum and Wilkinson (1989) is used. 3. Cytotaxonomy of Caecilians 35 II- Caecilian Diversity A* Primitive Families Primitive caecilians have terminal or nearly terminal mouths, relatively numerous skull bones, a short tail, the tentacle closer to the eye than to the naris, all of the primary annuli subdivided by secondary and tertiary annular grooves, and numerous dermal scales in all of the annular grooves.

Download PDF sample

Rated 4.55 of 5 – based on 26 votes