A form of competition that revolves around the superior ability to gather resources rather than an active interaction among organisms for these resources. The EST can be mapped, by a combination of genetic mapping procedures, to a unique locus in the genome and serves to identify that gene locus . A vector that has been designed to express cloned genes in a particular cell type. The degree to which a particular genotype is expressed in the phenotype . The degree of expression of a genetically controlled trait.
F factor See fertility factor .
A fertility factor into which a portion of the bacterial chromosome has been incorporated. The first filial generation , produced by crossing two parental lines. The second filial generation , produced by selfing or intercrossing the F1. A trait shared by members of a family. A map of an embryo showing areas that are destined to develop into specific adult tissues and organs.