KERAGAMAN SIFAT KUALITATIF AYAM KAMPUNG DI MINAHASA

THE DIVERSITY OF QUALITATIVE CHARACTERISTICS IN NATIVE CHICKEN AROUND MINAHASA. This study aims to determine the diversity of qualitative characteristics in native chicken around Minahasa Regency. A total of 292 adult chickens were used as samples taken randomly and analyzed using descriptive methods. The results showed that the phenotype frequency, color genotype and feather pattern were 0.000515. Trait frequencies of comb shape was 0.000458, cupping color was 0.9957, foot skin color was 0.9949, and spur shape was 0.000193. The degree of heterosigosity of qualitative characteristics of Kampung chickens in Minahasa on average was in the medium category (0.20) to high (0.50). The degree of heterosigosity of the phenotypic traits of native chicken in Minahasa indicated the relative low degree of inbreeding mating. Distribution of phenotypic inheritance of feather color, comb shape and shape of male foot spurs based on samples of native chicken populations were not in genetic equilibrium. The qualitative traits of native chickens in the Minahasa Regency showed a fairly high level of diversity. Key words: native chicken, qualitative characteristics.

Introduction

Urban evolutionary biology is the study of evolutionary change in organisms as a response to human built environments and all that high densities of humans entail. Put succinctly, urban evolution is the study of how features of cities drive allele, genotype, and phenotype frequency changes in populations across generations. This chapter introduces Urban Evolutionary Biology. It also emphasizes that urban evolutionary biology can—and should—have a societal impact, and a role in strengthening the drive towards more sustainable cities. An overview of chapters reporting core evidence of up-to-date urban evolutionary biology research follows. Finally, the chapter presents a brief discussion of challenges faced by the field, and outlines some inspiring future directions awaiting this nascent field of research.

Glutathione S-transferase M1 (GSTM1) polymorphism in two Brazilian populations

The distribution of GSTM1 phenotype frequencies was studied in two Brazilian samples composed of healthy and unrelated blood donors of both sexes ranging in age from 18 to 61 years. The first sample consisted of 658 individuals from Rio de Janeiro, and the second included 179 individuals from Brasília. The GSTM1 phenotypes were detected using PCR reactions and subsequent digestion by the restriction enzyme HaeII. The GSTM1 null phenotype frequency was 46% and 49% for Rio de Janeiro and Brasília samples, respectively. The GSTM1 phenotype distributions were not in agreement with Hardy-Weinberg equilibrium in either sample, chi²1 = 11.49 (P < 0.001) for Rio de Janeiro and chi²1 = 6.77 (P < 0.01) for Brasília. This deviation from Hardy-Weinberg equilibrium may be due to factors such as selection, errors in the phenotype determination or incomplete panmixia of the Brazilian population, whose main racial components are Caucasians, Africans and Indians.