GenosPro genetic methodology
GenosPro calculates genealogical and genetic metrics from the available pedigree information. In Dog Details it automatically uses the dog's deepest complete generation; analyses with a selector use the chosen depth. This page describes how the values shown throughout the platform are obtained.
COI — Coefficient of Inbreeding
COI is calculated from the additive numerator relationship matrix using the tabular method associated with Henderson. For an offspring, its inbreeding coefficient equals half the additive relationship between sire and dam within the analyzed generations.
F = A(sire, dam) / 2
Inbreeding contribution by ancestor — Wright
The ancestor-level breakdown is obtained with Wright's path decomposition. Valid loops between sire and dam branches are considered together with the common ancestor's own inbreeding. The sum of ancestor contributions matches the total COI calculated by the relationship matrix.
contribution = (1/2)^(n1+n2+1) × (1 + Fₐ)
AVK — Ancestor diversity
AVK expresses the percentage of unique ancestors relative to the theoretical number of ancestral positions possible within the selected generations. Repeated appearances of the same individual reduce the number of unique ancestors.
AVK = unique ancestors / theoretical ancestors × 100
RC — Relationship Coefficient
RC expresses the degree of relationship between the two individuals and is derived from the same additive relationship matrix used for COI, normalized by the diagonal values of both individuals.
RC = A(sire, dam) / √(A(sire,sire) × A(dam,dam)) × 100
MK — Population Mean Kinship
MK is the mean kinship of the studied individual with all real, genetically unique dogs of the same breed currently present in GenosPro. It uses exactly the selected generation depth. A hypothetical offspring is compared with the real population but does not become part of that population.
Depth, identity and missing data
A dog represents one unique genetic individual even when it appears multiple times in a pedigree. Within N generations, GenosPro uses all known genealogy of that individual that falls inside the selected depth. Ancestors beyond N are outside that analysis.
Missing ancestors are never invented or inferred. When a pedigree is incomplete, results apply to the known genealogy within the selected generations and may change when new pedigree data is added.
Descriptive COI ranges
Range names describe only the value's position within the technical scale and do not constitute a breeding judgment.
GenosPro provides genealogical and genetic metrics calculated from the available data. It does not determine whether a cross is suitable or unsuitable and does not replace the breeder's professional judgment.
This methodology documents the calculations currently used by GenosPro and may be updated if the calculation engine evolves.