TAILIEUCHUNG - Báo cáo sinh học: "Prediction of response to selection within families"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: Prediction of response to selection within families | 379 Genet Sei Evol 1996 28 379-383 Elsevier INRA Note Prediction of response to selection within families WG Hill1 A Caballero1 L Dempfle2 1 Institute of Cell Animal and Population Biology University of Edinburgh West Mains Road Edinburgh EH9 3JT UK 2 International Trypanotolerance Centre PMB 14 Banjul the Gambia Received 19 January 1996 accepted 24 May 1996 Summary The distinction is clarified between two different uses of the term within-family selection either to imply that one individual of each sex is selected from each family or to imply that individuals are selected on their deviation from family mean in which case families may not be equally represented. In the short term selection on within-family deviation is expected to give higher responses but in the long term selection within families is expected to give higher responses as the effective population size is larger. The two schemes are the same however if only two individuals of each sex are recorded in each family. artificial selection selection index accuracy of selection response effective population size Resume - Prediction de la réponse à la selection intrafamille. Une distinction est faite entre deux emplois du terme selection intrafamille qui implique tantôt une selection d un nombre égal d individus de chaque sexe dans chaque famille tantôt une selection des individus sur leur écart à la moyenne de famille auquel cas toutes les families ne sont pas nécessairement également représentées. A court terme 1 espérance de la réponse à une selection sur 1 écart intrafamille est plus grande mais à long terme I esperance de la réponse à une selection intrafamille stride est supérieure car une telle selection accroĩt I effedif génétique. Les deux schemas de selection sont cependant identiques si seulement deux individus de chaque sexe sont contrôlés dans chaque famille. selection artificielle Indice de selection precision de la selection réponse effectif génétique Only one-half of the additive genetic .

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