TAILIEUCHUNG - Báo cáo sinh học: " Model of invasion of a population by transposable elements presenting an asymmetric effect in gametes"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: Model of invasion of a population by transposable elements presenting an asymmetric effect in gametes | Genet Sei Evol 1993 25 153-175 Elsevier INRA 153 Original article Model of invasion of a population by transposable elements presenting an asymmetric effect in gametes G Morel1 R Kalmes2 G Périquet2 1 UFR Sciences et Techniques Departement de Mathématiques Parc Grandmont 37200 Tours 2 UFR Sciences et Techniques Institut de Biocénotique Experimentale des Agrosystèmes URA CNRS 1298 Parc Grandmont 37200 Tours France Received 2 April 1992 accepted 9 December 1992 Summary - Dynamics of population invasion by transposable elements is analyzed and simulated using a model with a very large number of transposition sites. The properties of the model are determined in the framework of a conflict between transposition capabilities of the elements and their harmful effects on the host genome. Equations are developed for the mean and the variance of the number of elements at equilibrium. We use simulations to analyze the effects of various parameters on the dynamics of the elements revealing the importance of the insertion rate and of the self-regulation properties of the elements. Using values obtained from the P-M system of Drosophila melanogaster the simulations show that the invasion of these elements is likely to occur in 100 years which is an interval compatible with recent ideas on this invasion. Our analysis of chained invasions reveals the possibility of a mean element number gradient occurring just as has been observed in European wild populations. transposable elements I hybrid dysgenesis model of invasion simulation Resume Modèle d invasion d une population par des elements transposables présentant une action asymétrique selon les gametes. L invasion de populations par des elements transposables est analysée et simulée en utilisant un modèle à grand nombre de sites de transposition. Les propriétés du modèle sont déterminées dans le cadre du conflit entre les capacités de transposition des elements et les effets délétères qu ils induisent sur le génome hôte. Les .

• Báo cáo khoa học
• Báo cáo sinh học hay
• cách trình bày báo cáo
• báo cáo sinh học
• công trình nghiên cứu sinh học
• tài liệu về sinh học