A Robertsonian polymorphism resulting in diploid chromosome number ranging from 59 to
61 and constant chromosome arm number (fundamental number= 104) was observed in the …

This work reveals the chromosomal characteristics of the five cultured strains of rainbow
trout, Oncorhynchus mykiss. The five strains—Americana, Donaldson, Cofradex, Steelhead …

The Y chromosome in chinook salmon, Oncorhynchus tshawytscha, was identified using
fluorescence in situ hybridization (FISH) with a probe to a male-specific repetitive sequence …

Many but not all rainbow trout strains have morphologically distinguishable sex
chromosomes. In these strains, the short arm of the X has multiple copies of 5S rDNA and a …

Despite the theoretical and experimental progress, our understanding on sex chromosome
differentiation is still diagrammatic. The accumulation of repetitive DNA sequences is …

Morphologically differentiated sex chromosomes are found in only few salmonid species.
Some populations of rainbow trout, Oncorhynchus mykiss, exhibit chromosomal …

Results of fluorescence in situ hybridization (FISH) of Bos taurus and B. indicus Y
chromosomes using the bovine locus-specific Y probes BC1. 2 and λES6. 0 and region …

The karyotype of the rainbow trout is characterized by a primitive XX/XY sex-determining
chromosomal system.(Thorgaard et al., 1977). In the present study using FISH we have …

Cytogenetic or molecular identification of sex chromosomes could help in breeding studies
in producing monosex fish stocks, estimating success of androgenesis, gynogenesis, etc …

The fish constitute about 50% of all vertebrates, including a wide morphological and
biological diversity, where the genus Astyanax is the most common and diverse, as …