Post-Zygotic Chromosomal Rearrangements in Rainbow Trout (Salmo irideus Gibbons)
| Autor: | M T Zenzes, E Faisst, C Stenius, S Ohno |
|---|---|
| Rok vydání: | 1965 |
| Předmět: |
Male
Biometry Somatic cell Zoology Biology Kidney Chromosomes Meiosis Hylobates Testis Genetics Animals Humans Salmo Molecular Biology Genetics (clinical) Zygote Research Ovary Fishes Chromosome biology.organism_classification Biological Evolution Liver Oncorhynchus mykiss Female Rainbow trout Ploidy Cell Division Spleen |
| Zdroj: | Cytogenetic and Genome Research. 4:117-129 |
| ISSN: | 1424-859X 1424-8581 |
| DOI: | 10.1159/000129849 |
| Popis: | Four age groups of the rainbow trout (Salmo irideus) were surveyed in an extensive cytological study. While the basic diploid complement of this species was found to consist of 104 chromosome arms, some elements united and dissociated early in embryonic life; thus within each individual fish, from two to seven distinct chromosome constitutions were identified, ranging from 2n = 58 to 2n = 65. Each somatic cell type tended to have a particular diploid chromosome number. Several multivalents were found in meiotic germ cells of both sexes. The Robertsonian type of chromosomal change which played an important part in the evolution of terrestrial vertebrates is seen within single individuals of this teleost fish. |
| Databáze: | OpenAIRE |
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