Allele frequencies of nine STR loci—D16S539, D7S820, D13S317, CSF1PO, TPOX, TH01, F13A01, FESFPS and vWA—in the population from Alagoas, northeastern Brazil

The polymorphism of nine STR loci has been studied in a sample of 598 individuals from the population of Alagoas, Northeastern Brazil. Determination of the allele frequencies as well as of several commonly used statistics in forensic and paternity testing were defined. The most polymorphic loci were TH01 and D7S317. The exact test demonstrated that the nine loci analyzed in the population have no deviation from Hardy–Weinberg equilibrium (P>0.05).     

Effects of Public Opinion and Political System Characteristics on State Policy Outputs

Rather than competing with socioeconomic variables as directdeterminants of state policy, political system characteristicsmay operate as mediating factors that either facilitate or impedethe translation of constituency preferences into policy. Inthis study, the state opinion liberalism index presented byGerald Wright, Robert Erikson, and John Mclver is incorporatedin multiplicative regression models as a measure of citizenpreferences to address this theoretical reformulation. Althoughpervasive empirical corroboration is not found for the reconceptualizedrole for political variables, political system characteristicsdo demonstrate significant effects on state policy. In addition,suggesting that public officials responddirectly to citizenpreferences, evidence ispresentedon democratic representationwithin the states.     

The Consequences of Gentrification for Racial Change in Washington,DC

This article looks at the effects of gentrification on the racial composition and transformation of urban neighborhoods. The investigation examines Washington, DC, a city that has undergone significant and contentious racial transformation in the past few decades. To provide for a more robust analysis of how gentrification is associated with measures of racial displacement and diversity, I employ two separate quantitative measures. Using U.S. Census Bureau long form, American Community Survey, and decennial census data, I compare tract-level changes in racial evenness and displacement between gentrifying and nongentrifying areas from 1990 to 2010. The findings suggest that gentrification is associated with the displacement of blacks, but this racial turnover is not consistently associated with greater levels of racial and ethnic diversity compared with nongentrifying neighborhoods.     

Nondestructive Methods for Recovery of Biological Material from Human Teeth for DNA Extraction

The extraction of DNA from human skeletal remains applied to forensic, and evolutionary studies do not exclude risks, which are to be evaluated when working with unique specimens that could be damaged or even destroyed. In the present study were evaluated several nondestructive methods for recovering DNA instead of the most currently used pulverization method. Three different procedures to access inside the dental pieces (occlusal perforation, cervical perforation, and cervical cut) have been compared with the aim of recovering as many cell remains as possible to carry out a DNA extraction. Given the DNA quantitation results, a method was proposed that consists of a cervical cut to facilitate the access to the pulp cavity and a subsequent filing of the root canals down to the apex of the dental root. This methodology allows the recovery of both mitochondrial and nuclear DNA, with the minimum deterioration for the dental pieces.