PedigreeSim

PedigreeSim simulates genetic marker data by modeling meiosis in diploid and tetraploid species to support linkage mapping, haplotyping, quantitative trait loci analysis, and testing models of tetraploid inheritance.

Key Features:

• Diploid and Tetraploid Simulation: Simulates genetic marker data for both diploid and tetraploid populations.
• Chiasma Interference: Models meioses with or without chiasma interference in diploids.
• Bivalent and Quadrivalent Formation: Simulates tetraploid meioses involving either two bivalents or one quadrivalent per homologous set.
• Preferential Pairing: Allows specification of varying degrees of preferential pairing among homologous chromosomes.
• Quadrivalent Configurations: Includes multiple quadrivalent configurations to model double reduction and recombination involving more than two homologues.
• Theoretical Validation: Produces simulation results that align with theoretical predictions.

Scientific Applications:

• Linkage Mapping and Haplotyping: Generates simulated marker datasets to develop and refine linkage mapping and haplotyping methods in tetraploid species.
• Quantitative Trait Loci (QTL) Analysis: Provides realistic datasets that reflect tetraploid genetic complexities for QTL analysis.
• Model Testing and Development: Enables testing and development of models of tetraploid meiosis and inheritance.

Methodology:

Uses computational algorithms to simulate meiosis in diploid and tetraploid species by modeling chiasma interference, bivalent and quadrivalent formation, preferential pairing, chromosome pairing and segregation, and generating genetic marker data, with results compared to theoretical predictions.