Inbreeding in artificial selection programmes

Population structure in artificial selection programmes: simulation studies.

A simulation study was undertaken of methods of subdividing populations into several small sublines and utilizing the variances generated between lines by selecting among them. Crosses of chosen lines were made, and either selection was continued in a single large population (single cycle) or the population was subdivided again (repeated cycles). As a control for the efficiency of these schemes...

Improving the efficiency of artificial selection: more selection pressure with less inbreeding.

The use of population genetic variability in present-day selection schemes can be improved to reduce inbreeding rate and inbreeding depression without impairing genetic progress. We performed an experiment with Drosophila melanogaster to test mate selection, an optimizing method that uses linear programming to maximize the selection differential applied while at the same time respecting a restr...

Sexual Selection: The Weevils of Inbreeding

A recent study has used inbreeding depression to gain insight into the maintenance of additive genetic variation in populations, with intriguing implications for good genes models of sexual selection.

The Synchronization of Oestrus in Sheep in Artificial Insemination Programmes

Predicting rates of inbreeding in populations undergoing selection.

Tractable forms of predicting rates of inbreeding (DeltaF) in selected populations with general indices, nonrandom mating, and overlapping generations were developed, with the principal results assuming a period of equilibrium in the selection process. An existing theorem concerning the relationship between squared long-term genetic contributions and rates of inbreeding was extended to nonrando...