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CHAPTER 1. INTRODUCTION 2 is built on the evolutionary and population genetics programming framework NEMO (Guillaume and Rougemont, 2006), with well developed demographic models. The demographic models of NEMO were kept, although several of these functionalities were re-coded, respectively adapted to the new functionalities of quantiNEMO. 1.4 License quantiNEMO is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. quantiNEMO is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with quantiNEMO. If not, see http://www.gnu.org/licenses/. 1.5 Acknowledgments We are grateful to Yves Rousselle, Patrick Meirmans, Christine Grossen, Claire Mouton, Olivier Blaser, Ilkka Kronholm, YiJian Huang, and Patrick Flight. These persons helped us to improve quantiNEMO by reporting bugs and/or great discussions. 1.6 Main features quantiNEMO consists in several simulation components which may be easily extended. The simulation components with their corresponding parameters are described in more detail in the rest of this manual. Quantitative traits quantiNEMO allows the simulation of one to multiple quantitative traits each having its own specifications. Each trait is defined by one to many loci each with up to 256 alleles. The allelic effects at each locus can be drawn from a normal distribution or can be set explicitly. Mutations are implemented with several models. The trait determinism can be purely additive, or include dominance and/or epistatic interactions among loci. Environmental effects can also be set in different ways. Neutral markers quantiNEMO also allows the simulation of neutral markers, such as microsatellites