The set of chromosomes contained in the nucleus of each cell of a species. A haploid nucleus has a single genome. Genotype The particular collection of genes possessed by an individual. A change in ranking of, or difference between, genetic groups under the influence of different environments. Caused by the switching on and off of different gene sets within a genotype.
Genotypic value See breeding value.
A breeding system in which there is a two-way flow of genetic material between tiers. Commonly, sires migrate downwards from ram breeding flocks, while a proportion of the upper level ewe requirements are drawn from lower levels. Half sibs Individuals with one parent in common. Haploid A nucleus that contains a single set of unpaired chromosomes. The scale of this statistic is 0 to 1.