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Comparative analysis of sex chromosomes in Leporinus species (Teleostei, Characiformes) using chromosome painting
(2013-07-03)
Background: The Leporinus genus, belonging to the Anostomidae family, is an interesting model for studies of sex chromosome evolution in fish, particularly because of the presence of heteromorphic sex chromosomes only in ...
Use of chromosome microdissection in fish molecular cytogenetics
(Sociedade Brasileira de Genética, 2008)
Chromosome microdissection is a technique in which whole chromosomes or chromosomal segments are dissected under an inverted microscope yielding chromosome-specific sequences. Several protocol modifications introduced ...
Possible interspecific origin of the B chromosome of Hypsiboas albopunctatus (Spix, 1824) (Anura, Hylidae), revealed by microdissection, chromosome painting, and reverse hybridisation
(2014-01-01)
The B chromosome in the hylid Hypsiboas albopunctatus (2n = 22 + B) is small, almost entirely composed of C-positive heterochromatin, and does not pair with any chromosome of the A complement. B probe, obtained by ...
Possible interspecific origin of the B chromosome of Hypsiboas albopunctatus (Spix, 1824) (Anura, Hylidae), revealed by microdissection, chromosome painting, and reverse hybridisation
(Pensoft Publ, 2014-01-01)
The B chromosome in the hylid Hypsiboas albopunctatus (2n = 22 + B) is small, almost entirely composed of C-positive heterochromatin, and does not pair with any chromosome of the A complement. B probe, obtained by ...
Chromosome painting in triatomine insects reveals shared sequences between x chromosomes and autosomes
(Oxford University Press, 2017)
In order to provide a broad picture on the origin and evolution of holocentric X chromosomes in heteropteran species, we prepared a sex chromosome painting probe by microdissection of the X1 and X2 chromosomes from a ...
Sex chromosome evolution in cotton stainers of the genus dysdercus (Heteroptera: Pyrrhocoridae)
(Karger, 2009-12)
The neo-X and neo-Y sex chromosomes of Dysdercus albofasciatus represent a unique model for the study of early stages of sex chromosome evolution since they retained the ability to pair and recombine, in contrast to sex ...
Chromosomal Instability and Origin of B Chromosomes in the Amazonian Glass Tetra Moenkhausia oligolepis (Günther, 1864) (Characiformes, Characidae)
(2021-09-01)
B chromosomes occur in different species of the small characid fishes of the genus Moenkhausia. These supernumerary elements, that do not recombine with chromosomes of the standard A complement and follow their own ...
Population differentiation and speciation in the genus Characidium (Characiformes: Crenuchidae): effects of reproductive and chromosomal barriers
(Wiley-Blackwell, 2014-03-01)
Both time and low gene flow are the key factors by which different biological species arise. The divergence process among lineages and the development of pre- or postzygotic isolation occur when gene flow events are lacking. ...
Sex chromosome composition revealed in Characidium fishes (Characiformes: Crenuchidae) by molecular cytogenetic methods
(De Gruyter Open Ltd, 2014-10-01)
The W chromosome of the fishes Characidium cf. fasciatum, Characidium sp. and Characidium cf. gomesi is heterochromatic, as is usually seen in most Characidium species. Samples of W-chromatin were collected by mechanical ...