Ancestor calculations 8 Generations

Understanding these calculations can be intricate, but we're here to help you understnad it.

Pedigree analysis relies on the database information and is only as accurate as the data available. Incomplete generations, where ancestors are unknown, are highlighted in red. To improve accuracy, missing dogs need to be added. If too many dogs are missing, the COI (Coefficient of Inbreeding) can be shown as 0.000%.


Ancestor Loss, Maximum Ancestors, Actual Ancestors:

The maximum potential number of ancestors in a pedigree can be calculated using the formula 2^(number of generations + 1) - 2. Ancestor loss is figured by comparing this maximum with the actual number of different ancestors. For example, in a four-generation pedigree with 30 dogs, if there are 30 unique dogs, there's no ancestor loss. But if there are only 26 unique dogs, indicating some inbreeding, the ancestor loss would be 13.3%.


Percentage of Genetic Contribution:

This estimates how much each ancestor contributes to the pedigree's genetics. Sire and dam each contribute 50%, grandsires and granddams 25%, great-grandparents 12.5%, and so on. Whenever an ancestor appears in the pedigree, their percentage values are added together. For instance, a dog in the grandparent generation contributes 25%, and if it also appears in the great-grandparent generation (12.5%), its total genetic contribution would be 37.5%.


Calculations for:
TENAFLY BROWN PEPPER


Coefficient of Inbreeding (COI):

Analysis Summary # of dogs Gen 1 Gen 2 Gen 3 Gen 4 Gen 5 Gen 6 Gen 7 Gen 8
Ancestors in 8 generations 68 2 2 4 6 10 9 7 15
Max. ancestor count 510 2 4 8 16 32 64 128 256
Ancestor loss 442 0 0 0 0 0 0 0 0
Ancestor loss % 86.7% 0 0 0 0 0 0 0 0
Ancestors Genetic Contribution % # of appearances 1 2 3 4 5 6 7 8
50.00% 1 1 0 0 0 0 0 0 0
TENAFLY PRINCESS ZOE 50.00% 1 1 0 0 0 0 0 0 0
APOCODEODAR INKBLOT OF TENAFLY 25.00% 1 0 1 0 0 0 0 0 0
TENAFLY FRENCH KISS 25.00% 1 0 1 0 0 0 0 0 0
QUATT HONEYK 12.50% 1 0 0 1 0 0 0 0 0
12.50% 1 0 0 1 0 0 0 0 0
TENAFLY ARCHIE 12.50% 1 0 0 1 0 0 0 0 0
BESS OF TENAFLY 12.50% 1 0 0 1 0 0 0 0 0
HONEY KING OF QUATT 6.25% 1 0 0 0 1 0 0 0 0
QUATT BELLE DONNA 6.25% 1 0 0 0 1 0 0 0 0
GARNGOUR GAEL WARNING OF BOMLITZ 6.25% 1 0 0 0 1 0 0 0 0
EVITA OF TENAFLY 6.25% 1 0 0 0 1 0 0 0 0
6.25% 1 0 0 0 1 0 0 0 0
BIJOU OF BORISTI OF MERROWLEA 6.25% 1 0 0 0 1 0 0 0 0
QUATT HEIRENAS BAMBI 4.69% 4 0 0 0 0 0 2 2 0
QUATT HONEY BEAR 3.13% 1 0 0 0 0 1 0 0 0
ANNAVI FLEUR DE MIDI 3.13% 1 0 0 0 0 1 0 0 0
QUATT PRIMA DONNA 3.13% 1 0 0 0 0 1 0 0 0
QUATT DARON 3.13% 2 0 0 0 0 0 2 0 0
QUATT TWEEDLE DUM OF HIVE 3.13% 1 0 0 0 0 1 0 0 0
QUATT TIGER TIM 3.13% 6 0 0 0 0 0 0 2 4
3.13% 1 0 0 0 0 1 0 0 0
GARNGOUR DERRYPRINCESS 3.13% 1 0 0 0 0 1 0 0 0
3.13% 1 0 0 0 0 1 0 0 0
3.13% 1 0 0 0 0 1 0 0 0
3.13% 1 0 0 0 0 1 0 0 0
BLUE ANGEL OF BORISTI 3.13% 1 0 0 0 0 1 0 0 0
2.34% 4 0 0 0 0 0 0 2 2
1.56% 1 0 0 0 0 0 1 0 0
TONI OF QUATT 1.56% 2 0 0 0 0 0 0 2 0
TEXAN TIM OF QUATT 1.56% 4 0 0 0 0 0 0 0 4
QUATT SNOW FLAKE 1.56% 1 0 0 0 0 0 1 0 0
QUATT PRETTY SNOW 1.56% 1 0 0 0 0 0 1 0 0
1.56% 1 0 0 0 0 0 1 0 0
1.56% 1 0 0 0 0 0 1 0 0
BOUTON OF BORISTI 1.56% 1 0 0 0 0 0 1 0 0
1.56% 1 0 0 0 0 0 1 0 0
SNOWMAN OF QUATT 0.78% 1 0 0 0 0 0 0 1 0
0.78% 2 0 0 0 0 0 0 0 2
ANNCEY OF QUATT 0.78% 2 0 0 0 0 0 0 0 2
QUATT PENNY POPPET 0.78% 2 0 0 0 0 0 0 0 2
QUATT BOBO 0.78% 2 0 0 0 0 0 0 0 2
BENHOOKS JONATHAN OF FLITCHSTAR 0.78% 1 0 0 0 0 0 0 1 0
BITTER SWEET OF BORISTI 0.78% 1 0 0 0 0 0 0 1 0
BUTTONOAK MASTER OF QUATT 0.39% 1 0 0 0 0 0 0 0 1
MARIE ANN OF QUATT 0.39% 1 0 0 0 0 0 0 0 1
AMANDA OF QUATT 0.39% 1 0 0 0 0 0 0 0 1
SNOWBEE OF QUATT 0.39% 1 0 0 0 0 0 0 0 1
0.39% 1 0 0 0 0 0 0 0 1
BENHOOKS JACKIE OF MUFFETOWN 0.39% 1 0 0 0 0 0 0 0 1
BITTER BRANDY OF BORISTI 0.39% 1 0 0 0 0 0 0 0 1
TERRETTE'S GLORIANA LA REINE OF BORISTI 0.39% 1 0 0 0 0 0 0 0 1