Essays about: "Populationsgenetik"

Found 5 essays containing the word Populationsgenetik.

  1. 1. Beyond high mutation highrecombination limit in statisticalgenetics

    University essay from KTH/Fysik

    Author : Luc Zorrilla; [2021]
    Keywords : Statistical Genetics; Population genetics; Statistical physics; Linkage Equilibrium;

    Abstract : One considers the bi-allelic model in population genetics which describes a population of genomes evolving under the processes of selection, mutation, recombination and drift. A focus is made on the Quasi-Linkage Equilibrium (QLE) phase with recent derivations from Neher and Shraiman, which exists for fast recombinations compared to selection strength and whose dynamics is greatly simplified compared to the general case. READ MORE

  3. 2. Developing new methods for estimating population divergence times from sequence data

    University essay from Uppsala universitet/Institutionen för medicinsk biokemi och mikrobiologi

    Author : Karl Svärd; [2021]
    Keywords : genetics; evolution; bioinformatics; migration; demography; beta distributions; population genetics; numerical methods; simulations; genetik; evolution; bioinformatik; migration; demografi; betafördelning; populationsgenetik; numeriska metoder; simulationer;

    Abstract : Methods for estimating past demographic events of populations are powerful tools in order to get insights of otherwise hidden pasts. The genetic data of people is a valuable resource for these purposes as patterns of variation can inform of the past evolutionary forces and historical events that generated them. READ MORE

  4. 3. Mean and variance of absorption time in a population genetics model: Comparison between Markov chain and diffusion process methods.

    University essay from Lunds universitet/Matematik (naturvetenskapliga fakulteten)

    Author : Alexander Koronen; [2019]
    Keywords : Population genetics; Markov chain; Diffusion process.; Mathematics and Statistics;

    Abstract : Finding the expected number of generations it takes before every individual in a population (of constant size) only has one type of gene at a particular locus of a chromosome, can be formulated as computing the mean absorption time in a Markov chain. However, the Markov chain approach is inappropriate when the population is large. READ MORE

  5. 4. Konsekvenser av inavel under många generationer : populationsgenetiska mekanismer

    University essay from SLU/Dept. of Biosystems and Technology (from 130101)

    Author : Carita Johansson; [2017]
    Keywords : inavel; inavelsdepression; purging; fitness; alleler; generationer; flaskhals; selektion; återhämtning; populationsgenetik;

    Abstract : Inavel innebär att individer som är nära släkt får avkomma tillsammans. Om det pågår under många generationer påverkas förloppet av flera olika mekanismer. Inaveln i sig gör att den genetiska variationen i populationen minskar och blir likartad. READ MORE

  6. 5. Bevarande av de svenska lantraserna, populationsgenetiska och molekylärgenetiska metoder

    University essay from SLU/Dept. of Animal Breeding and Genetics

    Author : Sandra Magnusson; [2010]
    Keywords : Lantraser; Bevarande; Inavel; Populationsgenetik; Molekylärgenetik;

    Abstract : Today’s community requires an increase in food production. Animals are today bred so that they produce more than their ancestors did. Production has been the most important and breeds with the highest production levels have therefore become popular. READ MORE