Characters that differ between diploid and haploid honey bee (Apis mellifera) drones
Authors: Matthias Herrmann, Tina Trenzcek, Hartmut Fahrenhorst and Wolf Engels
Diploid males have long been considered a curiosity contradictory to the haplo-diploid mode of sex determination in the Hymenoptera. In Apis mellifera, ‘false’ diploid male larvae are eliminated by worker cannibalism immediately after hatching. A ‘cannibalism substance’ produced by diploid drone larvae .. Read More»
- Genet. Mol. Res. 4(4):
Hydrolases in the hypopharyngeal glands of workers of Scaptotrigona postica and Apis mellifera (Hymenoptera, Apinae)
Authors: Rosil�©ia A.C. Costa and Carminda da Cruz-Landim
Hydrolytic enzymes from hypopharyngeal gland extracts of newly emerged, nurse and foraging workers of two eusocial bees, Scaptotrigona postica, a native Brazilian stingless bee, and the Africanized honey bee (Apis mellifera) in Brazil, were compared. The hypopharyngeal gland is rich in enzymes in both species. Fifteen differen.. Read More»
- Genet. Mol. Res. 4(4):
A new single-nucleotide mutation (rs362719) of the reelin (RELN) gene associated with schizophrenia in female Chinese Han
Authors: W.J. Kuang, R.F. Sun, Y.S. Zhu and S.B. Li
Reelin is an extracellular signaling protein that plays an important role in the development of the central nervous system. Post-mortem studies have shown lower reelin protein levels in the brains of patients with schizophrenia and bipolar disorder compared with controls. Genetic studies have also shown that mutations in the r.. Read More»
- Genet. Mol. Res. 10(3):
- vol10-3gmr1343
- DOI:
- 10.4238/vol10-3gmr1343
Genetic trends of abdominal fat content in a male broiler chicken line
Authors: Leila de Genova Gaya, Gerson Barreto MourÃ?£o, Fernanda Marcondes de Rezende, ElisÃ?¢ngela Chicaroni de Mattos, TÃ?©rcio Michelan Filho, LuÃ?Âs Gustavo Girardi Figueiredo, JosÃ?© Bento Sterman Ferraz1 and Joanir Pereira Eler
Data of chickens from a broiler-breeding program were collected and used to determine the genetic trends of absolute and relative abdominal fat content. The genetic trends were estimated by the regression of trait genetic value averages on hatch-years. Genetic values from 32,485 individuals were used for regression analysis. T.. Read More»
- Genet. Mol. Res. 4(4):
Long survival in a 69,XXX triploid infant in Greece
Authors: Dimitrios Iliopoulos, Georgia Vassiliou, Eleni Sekerli, Vasiliki Sidiropoulou, Alexandra Tsiga, Despina Dimopoulou and Nikolaos Voyiatzis
The live birth of a triploidy infant is a very rare event and death usually occurs within the first hours of life. Triploid cases with a survival of more than two months are infrequent. We report on an infant with a 69,XXX chromosome constitution who survived 164 days. Chromosomal analysis demonstrated a 69,XXX karyotype with .. Read More»
- Genet. Mol. Res. 4(4):
A three-step molecular protocol employing DNA obtained from dried blood spots for neonatal screening for 45,X Turner syndrome
Authors: Mylene Neves Rocha, Murilo Rezende Melo, Carlos Alberto Longui, Daniela Vilari�§o Alves de Oliveira, Carolina Costa Figueiredo and Paulo Roberto Pacchi
Turner syndrome (TS) is one of the most common human chromosomal abnormalities; it is characterized by the presence of one normal X chromosome and the complete or partial loss of the second X chromosome. The early recognition of TS patients allows for adequate therapy for short stature and pubertal sex steroid substitution. We.. Read More»
- Genet. Mol. Res. 4(4):
Problems with and a system to eliminate single-primer PCR product contamination in simple sequence repeat molecular marker-assisted selection in soybean
Authors: J. Ma, S.C. Guan, D. Yao, Y.F. Wei and P.W. Wang
Polymerase chain reaction (PCR) provides a foundation for simple sequence repeat molecular marker-assisted selection (SSR MAS) in soybean. This PCR system and its various conditions have been optimized by many researchers. However, current research on the optimization of the PCR system focuses on double-primer PCR products. We.. Read More»
- Genet. Mol. Res. 10(3):
- vol10-3gmr1366
- DOI:
- 10.4238/vol10-3gmr1366
Multiple Mantel tests and isolation-bydistance, taking into account long-term historical divergence
Authors: Mariana Pires de Campos Telles and Jos�© Alexandre Felizola Diniz-Filho
Mantel tests of matrix correspondence have been widely used in population genetics to examine microevolutionary processes, such as isolation-by-distance (IBD). We used partial and multiple Mantel tests to simultaneously test long-term historical effects and current divergence and equilibrium processes, such as IBD. We used the.. Read More»
- Genet. Mol. Res. 4(4):
A modified method for high-quality DNA extraction for molecular analysis in cereal plants
Authors: Z.H. Pervaiz, N.A. Turi, I. Khaliq, M.A. Rabbani and S.A. Malik
Cereal crops that have rigid non-cellulose components in the cell wall tissues of leaves and high starch and protein content in grains face limitations in DNA extraction. Advanced molecular genetic techniques such as mapping and marker-assisted selection programs require pure and quick DNA extraction. In this study, we developed methods for isolating high.. Read More»
- Genet. Mol. Res. 10(3):
- vol10-3gmr1346
- DOI:
- 10.4238/vol10-3gmr1346
First chromosome data on Steindachneridion scripta (Pisces, Siluriformes, Pimelodidae) from Brazilian rivers: Giemsa, CBG, G-, and RE banding
Authors: Ana Claudia Swar�§a, Alberto Sergio Fenocchio, Marta Margarete Cestari and Ana L�ºcia Dias
A cytogenetic study was performed on the large pimelodid species Steindachneridion scripta (Siluriformes, Sorubiminae) from the Paraná River basin (Brazil). Chromosome preparations were obtained avoiding sacrifice of the specimens, by means of lymphocyte culture, and several staining and chromosome banding techniques we.. Read More»
- Genet. Mol. Res. 4(4):