Variations in traditional marriage and family forms: Responses to the changing pattern of family-based social security systems in Sierra Leone and Kenya

A multitude of family forms can be found in African societies, and the functions we associate with the European term “family” do not necessarily belong to any specific form. The variety in the formation of different residence, consumption, and production units becomes obvious through the analysis of the social structure of individual b peoples, as well as through inter-ethnic comparisons. This article focuses on the differences between various types of social organization of an East- and a West-African people, and analyzes the complexities of and changes in family structures in the relevant socio-political and economic contexts. It also looks at the impact of the introduction of public administration and the commercialization of agriculture on social dynamics and family forms.     

The recovery of latent fingermarks and DNA using a silicone-based casting material

There are many techniques available for the recovery of fingermarks at scenes of crime including the possibility of taking casts of the marks. Casts can be advantageous in cases where other destructive recovery techniques might not be suitable, such as when recovering finger marks deposited on valued or immobile items. In this research, Isomark (a silicone-based casting material) was used to recover casts of finger marks placed on a variety of substrates. Casts were enhanced using cyanoacrylate fuming. Good quality marks were successfully recovered from a range of smooth, non-porous surfaces. Recovery from semi-porous surfaces was shown to be inefficient. DNA was subsequently extracted from the casts using QIAamp Mini extraction kits, amplified and profiled. Full DNA profiles were obtained 34% of samples extracted.     

Genetic profile of a multi-ethnic population from Guiné-Bissau (west African coast) using the new PowerPlex 16 System kit

Allele and haplotype frequencies of 15 chromosome STR loci included in the kit PowerPlex16 System from Promega, were determined in a sample of unrelated males from Guiné-Bissau, a country from the west African coast. All individuals were subjected to an interview in order to make sure that their ancestors belonged to the same ethnic group. This way we intended to look for possible inter-ethnic differences. PowerPlex 16 includes STRs not studied before in any multi-ethnic population. The kit includes two new allele markers (Penta D and Penta E), which are very useful either in forensics or population genetic studies. The Guinean population presents significant differences when compared with other African populations.