A total of Thirty Nigerian indigenous genotypes of the domestic fowl, aged between 22-25 weeks were used to evaluate the biometry of male genitalia and internalorgan characteristics.The result showed significant (p<0.05) effect of genotype, on right epididymis weight with naked neck having a higher mean value of 0.17± 0.60g and normal feather with least value of 0.14± 0.03g. The paired vas defe...

HE lack of an ancestral “standard of reference”, “normal” or “wild type” T for use in genetic studies of the domestic fowl has been of little concern to many poultry geneticists (for a recent discussion of this topic see JAAP and HOLLANDER 1954). In the field of plumage color inheritance, however, a standard of reference seems necessary in describing the action of mutant genes. What the standar...