Authors: D.C. Cucco, J.B.S. Ferraz, J.P. Eler, J.C.C. Balieiro, E.C. Mattos and L. Varona
Genetic parameters for traits related to postweaning growth in Braunvieh cattle, reared under tropical and sub-tropical conditions in Brazil, were studied. Weight traits were weight at 365 days of age (W365, N = 4055), at 450 days (W450, N = 3453), and at 550 days (W550, N = 1946), while weight gains were gain from weaning to .. Read More»
Authors: P. Coutinho, V. Sandim, J.A. Oliveira, G. Alves and A. Hatagima
The glutathione S-transferases (GSTs), a family of phase II isozymes, detoxify several carcinogens. Genetic variations in GSTs have been associated with increased risk for cancer due to a heritable deficiency in detoxification pathways for environmental carcinogens. Conflicting findings have been reported about the association.. Read More»
Authors: Y. Yue, X. Cheng, S.G. Zhao, Z. Liu, L.S. Liu, R. Zhou, J.P. Wu and M.A. Brown
To evaluate stearoyl-CoA desaturase (SCD), hormone-sensitive lipase (HSL), lipoprotein lipase (LPL), and peroxisome proliferator-activated receptor (PPARγ) expression in Lanzhou fat-tailed sheep (with and without docked tails), 18 rams were randomly divided into two equal groups (docked group, LT; control group, LC). The.. Read More»
Authors: N.M.A. Nassar, D.Y. Hashimoto and D.G. Ribeiro
A molecular, anatomical and cytogenetic study of an interspecific hybrid between Manihot esculenta (cassava) and the wild species M. oligantha was carried out. Cytogenetics revealed relatively complete chromosome pairing and high viability of the pollen grains. Ovule structure examined by the clearing method showed polyembryon.. Read More»
Authors: X. Ma, X.-Y. Gu, T.-T. Chen, S.-Y. Chen, L.-K. Huang and X.-Q. Zhang
The genus Lolium is one of the most important groupings of temperate forage grasses, including about eight recognized species that are native to some temperate and subtropical regions of the northern hemisphere. We examined genetic relationships among 18 accessions representing all Lolium species using RAPD markers. Among 50 random primers that we screene.. Read More»
Authors: D.E.S. Leme, D.H. Souza, G. Mercado, E. Pastene, A. Dias and D. Moretti-Ferreira
Williams-Beuren syndrome (WBS) is a genetic disorder characterized by physical and intellectual developmental delay, associated with congenital heart disease and facial dysmorphism. WBS is caused by a microdeletion on chromosome 7 (7q11.23), which encompasses the elastin (ELN) gene and about 27 other genes. The gold standard for WBS laboratory diagnosis i.. Read More»
Authors: J.P. Zhou and C.H. Dong
The traits particularly important for milk production include milk yield, protein percentage, fat percentage, and the somatic cell score. Alpha-lactalbumin (α-LA) is an important whey protein of cow milk, and is also present in the milk of many other mammalian species. In this study, we analyzed the genetic polymorphisms of the α-LA gene and t.. Read More»
Authors: Y.L. Zhang, A.H. Zhang and J. Jiang
Patterns of gene expression in the different types of sucrose metabolism in the tomato are highly variable and heritable. This genetic variation causes considerable functional differences. We examined the patterns of expression of invertase (Inv) gene families and an invertase inhibitor (INH) gene involved in elongating roots, hypocotyls, and fruit of the.. Read More»
Authors: D.C. Gonzalez-Kristeller, L.M. Gutiyama, A.H. Campos, F.A. Soares, H. Brentani and B. Malnic
Olfactory neuroblastoma (ONB) is a malignant tumor found in the human nasal cavity. These tumors are rare and poorly characterized at the molecular level. In this study, we asked whether olfactory-specific genes are expressed in ONBs by using reverse-transcriptase-polymerase chain reaction. We found that the olfactory marker protein and the RIC-8B genes, .. Read More»
Authors: J.L. Viana, A.K. Francisco, C.A.L. Carvalho and A.M. Waldschmidt
Bees play a key role in pollination and thereby help maintain plant diversity. The stingless bee Melipona scutellaris is an important pollinator in northeastern Brazil because it is endemic to this region. Both deforestation and timber harvesting have reduced the nesting sites for this species, thus reducing its population and range. Genetic studies may h.. Read More»