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:
C AND D'S KARLA LA DUE


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 71 2 4 4 6 8 8 12 20
Max. ancestor count 510 2 4 8 16 32 64 128 256
Ancestor loss 439 0 0 0 0 0 0 0 0
Ancestor loss % 86.1% 0 0 0 0 0 0 0 0
Ancestors Genetic Contribution % # of appearances 1 2 3 4 5 6 7 8
WINDMARKS JOHNNY BE GOOD 50.00% 1 1 0 0 0 0 0 0 0
C AND D'S RAMBLIN ROSE 50.00% 1 1 0 0 0 0 0 0 0
25.00% 1 0 1 0 0 0 0 0 0
WINDMARKS SWEET TWEED 25.00% 1 0 1 0 0 0 0 0 0
25.00% 1 0 1 0 0 0 0 0 0
COX'S GOODTIME DAGNY DVILLE 25.00% 1 0 1 0 0 0 0 0 0
WINDMARKS AUTOMAN 12.50% 1 0 0 1 0 0 0 0 0
WINDMARKS MINNIE PEARL 12.50% 1 0 0 1 0 0 0 0 0
COX'S GOODTIME CHARLIE BROWN 12.50% 1 0 0 1 0 0 0 0 0
COX'S GOODTIME MEAGAN OF ACE 12.50% 1 0 0 1 0 0 0 0 0
COX'S GOOD TIME ACE IN THE HOLE 12.50% 2 0 0 0 2 0 0 0 0
6.25% 1 0 0 0 1 0 0 0 0
WINDMARKS SHADY LADY 6.25% 1 0 0 0 1 0 0 0 0
6.25% 1 0 0 0 1 0 0 0 0
6.25% 1 0 0 0 1 0 0 0 0
COX'S GOODTIME MINDY LOU OFKN'D 6.25% 1 0 0 0 1 0 0 0 0
6.25% 2 0 0 0 0 2 0 0 0
COX'S GOOD TIME DORENE 6.25% 2 0 0 0 0 2 0 0 0
BURLINGTON BERTI OF BORISTI 5.08% 3 0 0 0 0 1 1 0 1
WINDMARKS POLKA DOT ANNIE 4.69% 2 0 0 0 0 1 1 0 0
FAIRMONTS HEART TO BEAT 4.69% 3 0 0 0 0 0 3 0 0
COX'S GOOD TIME PETITE MIMI 3.13% 1 0 0 0 0 1 0 0 0
COX'S GOOD TIME SANDMAN 3.13% 1 0 0 0 0 1 0 0 0
3.13% 2 0 0 0 0 0 2 0 0
3.13% 1 0 0 0 0 1 0 0 0
3.13% 1 0 0 0 0 1 0 0 0
BENHOOKS JONATHAN OF FLITCHSTAR 2.34% 2 0 0 0 0 0 1 1 0
BITTER SWEET OF BORISTI 2.34% 2 0 0 0 0 0 1 1 0
TOMMYVILLE TINTORETTO 2.34% 2 0 0 0 0 0 1 1 0
2.34% 2 0 0 0 0 0 1 1 0
JIMMY LEE'S BANDOLERO OF ONO 2.34% 3 0 0 0 0 0 0 3 0
1.17% 2 0 0 0 0 0 0 1 1
BENHOOKS JACKIE OF MUFFETOWN 1.17% 2 0 0 0 0 0 0 1 1
TERRETTE'S GLORIANA LA REINE OF BORISTI 1.17% 2 0 0 0 0 0 0 1 1
HAMPTON'S CHEVALIER 1.17% 3 0 0 0 0 0 0 0 3
TOMMYVILLE TROGLODYTE OF HERNHILL 1.17% 2 0 0 0 0 0 0 1 1
BRITHMEL DWYNWEN OF TOMMYVILLE 1.17% 2 0 0 0 0 0 0 1 1
1.17% 3 0 0 0 0 0 0 0 3
LAFOREST'S JOLLY SANDMAN 0.78% 1 0 0 0 0 0 0 1 0
TOMMYVILLE TWEED EFFECT 0.78% 2 0 0 0 0 0 0 0 2
COX'S PETITE BABETTE 0.78% 1 0 0 0 0 0 0 1 0
BENHOOKS JEREBOAM 0.39% 1 0 0 0 0 0 0 0 1
BENHOOKS SADIE 0.39% 1 0 0 0 0 0 0 0 1
BATON OF BORISTI 0.39% 1 0 0 0 0 0 0 0 1
BENHOOKS CHERRY BRANDY 0.39% 1 0 0 0 0 0 0 0 1
TERRETTE'S TOURBILLON D'GAMIN 0.39% 1 0 0 0 0 0 0 0 1
TERRETTE'S RENEE BRUME DE MIEL 0.39% 1 0 0 0 0 0 0 0 1
DOGWOOD LYRIC OF TOMMYVILLE 0.39% 1 0 0 0 0 0 0 0 1
0.39% 1 0 0 0 0 0 0 0 1
LAFOREST'S DUTCHES OF MITZI 0.39% 1 0 0 0 0 0 0 0 1
0.39% 1 0 0 0 0 0 0 0 1
0.39% 1 0 0 0 0 0 0 0 1