Chromosomes
Characterization and description of a multiple sex chromosome system in Potamotrygon motoro (Chondrichthyes, Myliobatiformes) from the Paran�¡ River, Argentina
Authors: D.R. Aichino, M.C. Pastori, H.A. Roncati, M.A. Ledesma, A.C. Swar�§a and A.S. Fenocchio
The Potamotrygonidae family represents the only freshwater group of specialized elasmobranchs and is composed of 4 genera: Plesiotrygon, Paratrygon, Potamotrygon, and Heliotrygon. Individuals of Potamotrygon motoro were collected from the Paraná River at Ituzaingó (Province of Corrientes) in Argentina. Mitotic preparations were obtained usin.. Read More»
- Genet. Mol. Res. 12(3):
- 2013.January.16.3
- DOI:
- 10.4238/2013.January.16.3
Karyotypic evolution trends in Rhamdia quelen (Siluriformes, Heptapteridae) with considerations about the origin and differentiation of its supernumerary chromosomes
Authors: C. Garcia, C. Oliveira and L.F. Almeida-Toledo
Among catfish species of the genus Rhamdia reported for the Brazilian territory, R. quelen is the most widespread, being found in nearly all hydrographic basins of Brazil. Nowadays, R. quelen is a synonym for at least 47 other species in this genus, its taxonomic status still being controversial. The available cytogenetic repo.. Read More»
- Genet. Mol. Res. 9(1):
- vol9-1gmr750
- DOI:
- 10.4238/vol9-1gmr750
Comparative study of the cytogenetic and molecular characteristics of Triatoma maculata and T. pseudomaculata (Heteroptera, Triatominae)
Authors: P.P. Mendon�§a
Triatomines are hematophagous insects of great concern in public health because they are vectors of Trypanosoma cruzi, a protozoan that causes Chagas disease. Triatomines are also of great genetic interest, because they possess holocentric chromosomes and undergo an unusual form of meiosis with post-reductional segregation of .. Read More»
- Genet. Mol. Res. 9(1):
- vol9-1TA029
- DOI:
- 10.4238/vol9-1TA029
Description of the pre-reductional sex chromosome during male meiosis of Pachylis laticornis (Heteroptera: Coreidae)
Authors: C.A. Banho, K.C.C. Alevi, L.L.V. Pereira, T.S. Souza-Firmino and M.M. Itoyama
In Heteroptera, the division of sex chromosomes is well defined as post-reductional for most of species, i.e., the first meiotic division is equational and the second is reductional. However, in some species pre-reductional division has been observed, whereby the first meiotic division is reductional and the second is equation.. Read More»
- Genet. Mol. Res. 15(2):
- gmr.15027592
- DOI:
- 10.4238/gmr.15027592
Dynamics of chromosomal evolution in the genus Hypsiboas (Anura: Hylidae)
Authors: M.A. Carvalho, M.T. Rodrigues, S. Siqueira and C. Garcia
Hylidae is one of the most species-rich families of anurans, and 40% of representatives in this group occur in Brazil. In spite of such remarkable diversity, little is known about this family and its taxonomical and systematic features. Most hylids have 2n = 24, even though most of the cytogenetic data are mainly obtained base.. Read More»
- Genet. Mol. Res. 13(3):
- 2014.September.26.21
- DOI:
- 10.4238/2014.September.26.21
Additional chromosomal abnormalities in core-binding factor acute myeloid leukemia
Authors: H.H. Hsiao, Y.C. Liu, H.C. Wang, Y.F. Tsai, C.H. Wu, S.F. Cho, J.F. Hsu, C.T. Huang, S.Y. Hsiao, C.P. Lee, C.S. Chang, S.F. Lin and T.C. Liu
Despite sharing a similar genetic abnormality, patients with core binding factor acute myeloid leukemia (CBF-AML), which is characterized by the presence of t(8;21) or inv(16)/t(16;16), show heterogeneous survival. Other molecular or cytogenetic factors are supposed to have an impact on the prognosis. We enrolled 24 CBF-AML patients to determine the impac.. Read More»
- Genet. Mol. Res. 14(4):
- 2015.December.16.3
- DOI:
- 10.4238/2015.December.16.3
Physical location of the carotenoid biosynthesis genes Psy and �²-Lcy in Capsicum annuum (Solanaceae) using heterologous probes from Citrus sinensis (Rutaceae)
Authors: V. Andrade-Souza, M.G.C. Costa, C.X. Chen, F.G. Gmitter Jr. and M.A. Costa
Carotenoids are responsible for a range of fruit colors in different hot pepper (Capsicum) varieties, from white to deep red. Color traits are genetically determined by three loci, Y, C1, and C2, which are associated with carotenogenic genes. Although such genes have been localized on genetic maps of Capsicum and anchored in L.. Read More»
- Genet. Mol. Res. 10(1):
- vol10-1gmr1025
- DOI:
- 10.4238/vol10-1gmr1025