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Literature DB >> 837804

Diplotene chromosomes of Xenopus hybrid oocytes.

Abstract

Observation on meiotic diplotene chromosomes from oocytes of Xenopus species and subspecies hybrids are reported. Species interrelationships are established on the basis of the number of bivalent in the respective hybrids. Polyploid oocytes were found and their origin by supplementary endoreduplication placed at the differentiation stage of gametogenesis when oogonia become oocytes. The significance of polyploid oocytes for speciation is discussed.

Entities: Chemical Species

Mesh：

Year: 1977 PMID： 837804 DOI： 10.1007/BF00327969

Source DB: PubMed Journal: Chromosoma ISSN： 0009-5915 Impact factor: 4.316

11 in total

1. FERTILITY OF TARICHA SPECIES-HYBRIDS AND VIABILITY OF THEIR OFFSPRING.

Authors: V C Twitty
Journal: Proc Natl Acad Sci U S A Date: 1964-02 Impact factor: 11.205

2. The lampbrush chromosomes of Xenopus laevis (Daudin).

Authors: W P Müller
Journal: Chromosoma Date: 1974 Impact factor: 4.316

3. A chromosome mutation affecting the number of nucleoli in Xenopus borealis Parker.

Authors: M Jotterand; M Fischberg
Journal: Experientia Date: 1974-09-15

4. Oogenesis in Xenopus laevis (Daudin). I. Stages of oocyte development in laboratory maintained animals.

Authors: J N Dumont
Journal: J Morphol Date: 1972-02 Impact factor: 1.804

5. Chromosome complements of the genus Xenopus.

Authors: J Tymowska; M Fischberg
Journal: Chromosoma Date: 1973 Impact factor: 4.316

6. Transmission of sex cells of one species through the body of a second species in the genus Xenopus. II. Interspecific matings.

Authors: A W Blackler; C A Gecking
Journal: Dev Biol Date: 1972-03 Impact factor: 3.582

7. Diploid-polyploid cryptic species pairs: a possible clue to evolution by polyploidization in anuran amphibians.

Authors: J P Bogart; A O Wasserman
Journal: Cytogenetics Date: 1972

8. Hybridization of Xenopus laevis petersi (poweri) and X.l. laevis.

Authors: A W Blackler; M Fischberg
Journal: Rev Suisse Zool Date: 1968 Impact factor: 0.642

9. Viable amphibian hybrids produced by circumventing a block to cross-fertilization(Rana clamitans female x Rana catesbeiana male).

Authors: R P Elinson
Journal: J Exp Zool Date: 1975-06

10. Meiosis in interspecific equine hybrids. I. The male mule (Equus asinus X E. caballus) and hinny (E. caballus X E. asinus).

Authors: A C Chandley; R C Jones; H M Dott; W R Allen; R V Short
Journal: Cytogenet Cell Genet Date: 1974

10 in total

1. Two new polyploid Xenopus species from western Uganda.

Authors: M Fischberg; H R Kobel
Journal: Experientia Date: 1978-08-15

2. Expermental hybridization within the genus Triturus (Urodela: Salamandridae). III. Evidence for crossing-over, true chiasmata and chomosomal homologies in the spermatogenesis of F1 species hybrids, T. cristatus carnifex female X T. marmoratus male.

Authors: G Mancino; M Ragghianti; S Bucci-Innocenti
Journal: Chromosoma Date: 1979-08-10 Impact factor: 4.316

3. Genetic mapping in Xenopus laevis: eight linkage groups established.

Authors: J D Graf
Journal: Genetics Date: 1989-10 Impact factor: 4.562

4. Experimental gynogenesis provides evidence of hybridogenetic reproduction in the Rana esculenta complex.

Authors: J D Graf; W P Müller
Journal: Experientia Date: 1979-12-15

5. Chromosome banding in Amphibia. IX. The polyploid karyotypes of Odontophrynus americanus and Ceratophrys ornata (Anura, Leptodactylidae).

Authors: M Schmid; T Haaf; W Schempp
Journal: Chromosoma Date: 1985 Impact factor: 4.316