Robertsonian polymorphism and constitutive heterochromatin distribution in chromosomes of the rainbow trout (Salmo gairdneri).

@article{Thorgaard1976RobertsonianPA,
  title={Robertsonian polymorphism and constitutive heterochromatin distribution in chromosomes of the rainbow trout (Salmo gairdneri).},
  author={Gary H. Thorgaard},
  journal={Cytogenetics and cell genetics},
  year={1976},
  volume={17 4},
  pages={174-84}
}
White-blood-cell culture was used to examine the chromosomes of 53 rainbow trout (Salmo gairdneri) from three locations in the Pacific Northwest of the United States. A Robertsonian chromosome polymorphism is present, resulting in diploid numbers of 60, 59, or 58 in different individuals with 104 chromosome arms. The low level of intraindividual Robertsonian variation, differences in the number of subtelocentric chromosomes between individuals with different chromosome numbers, and frequencies… CONTINUE READING