Леп пример описанија
pedigrees' collapse /loss of lineage the term, тј. губитка јединсвених "правих" предака, када рецимо родитељи имају заједничког предка (нпр. прабабу)
Занима ме, дали је неко имао прилику да види аутосомалну ДНА особа којима су рецимо отац I1 P109, а мајчин отац такође I1 P109 или деда? Исто важи и за рецимо N1a.
The genealogical law of three generations, according to which each hundred years contain on average three generation intervals, holds for generation lengths for Y-chromosomal DNA, typically equal to 31-32 years; for autosomal and mtDNA, this time is somewhat shorter. Moving along ascending lineas, the number of genetically effective ancestors transmitting their DNA fragment to descendants increases far slower than the number of common ancestors, because the time to the nearest common ancestor is proportional to log2N, and the time to genetically effective ancestor, to N, where N is the population size...
.... However, in the course of the HapMap project it was established that 10-30% of pairs of individuals from the same population have at least one common genome region, which they inherited from a recent common ancestor.
https://www.researchgate.net/publication/221830575_Genetic_Aspects_of_Genealogy