Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học thế giới đề tài: On the relation between gene flow theory and genetic gain | Genet. Sel. Evol. 32 2000 99-104 INRA EDP Sciences 99 Note On the relation between gene flow theory and genetic gain Piter BlJMAa John A. WooLLlAMSb a Animal Breeding and Genetics Group Wageningen Institute of Animal Sciences Wageningen University . Box 338 Wageningen The Netherlands b Roslin Institute Edinburgh Roslin Midlothian EH25 9PS UK Received 29 June 1999 accepted 19 October 1999 Abstract - In conventional gene flow theory the rate of genetic gain is calculated as the summed products of genetic selection di erential and asymptotic proportion of genes deriving from sex-age groups. Recent studies have shown that asymptotic proportions of genes predicted from conventional gene flow theory may deviate considerably from true proportions. However the rate of genetic gain predicted from conventional gene flow theory was accurate. The current note shows that the connection between asymptotic proportions of genes and rate of genetic gain that is embodied in conventional gene flow theory is invalid even though genetic gain may be predicted correctly from it. genetic gain gene flow overlapping generations selection response Résumé Note sur la relation entre le calcul de flux des genes et le progrès génétique. Dans la methode classique de calcul de la transmission des genes le taux de progrès génétique est calculé comme la somme des produits de la diflerentielle de selection génétique et de la proportion asymptotique des genes provenant des groupes âge-sexe. Des etudes récentes ont montré que les proportions asymptotiques de gènes prédites a partir de la methode classique de calcul des flux de genes peu-vent dévier considérablement des proportions réelles. Par contre le progrès génétique est prédit è partir de cette mâme methode avec une bonne precision. La presente note montre que le lien entre le flux des genes et le progrès génétique tel qu il ap-parait dans la methode classique de calcul des flux des genes n est donc pas correct mâeme si le progrèes géenéetique
