3FunMap

3FunMap constructs genetic linkage maps and performs functional quantitative trait loci (QTL) analysis using molecular markers from full-sib families.

Key Features:

• Genetic Linkage Map Construction: Builds genetic linkage maps using molecular markers from full-sib families and estimates recombination frequencies across seven segregation types.
• Functional QTL Mapping: Performs functional quantitative trait loci (QTL) mapping to analyze dynamic genetic effects on complex traits across developmental stages or environmental conditions.
• Linkage Phase Determination: Determines linkage phases between marker pairs using model selection procedures to resolve uncertainties in cross-type and phase relationships.
• Heuristic Marker Ordering: Uses heuristic search and local ordering methods to determine optimal marker arrangements within linkage groups containing large numbers of markers.
• Statistical Analysis Functions: Implements procedures for identifying QTL segregation patterns, performing dynamic tests of QTL effects, conducting permutation tests, and executing numerical simulations.

Scientific Applications:

• Complex Trait Genetic Analysis: Investigates the genetic architecture of traits controlled by multiple quantitative trait loci.
• Developmental Genetics Studies: Analyzes dynamic genetic effects influencing trait expression across developmental stages.
• Plant and Animal Breeding Research: Supports identification of QTLs associated with agriculturally important traits in breeding populations.

Methodology:

3FunMap estimates recombination frequencies using seven segregation types, applies model selection to determine linkage phases in full-sib families, orders markers using heuristic and local search strategies, and evaluates QTL effects through dynamic testing, permutation tests, and numerical simulations.