In the group formation simulation, potential new breeding groups are formed from the list of candidate animals based on the genetic value of thoese candidates, and within-group relationships that must be avoided. If no candidate IDs are specified above or in the input pedigree, all population members will be used.

Please see the README tab for a full description of this process.

Kinship and Age Thresholds

The algorithm ignores between-animal kinship that is:

1. Smaller than the specified level (default is to ignore relatedness between animals more distantly related than second-cousin).
2. Where one of the animals is less-than, or equal-to the specified age (default is to ignore any relationship involving an animal 1 year or younger).

Relationship Category | Kinship (θ)
--- | ---
Monozygotic Twins | 0.5
Parent-Offspring | 0.25
Full Siblings | 0.25
Half Siblings/Grandparent-Grandchild | 0.125
Uncle-Nephew | 0.125
Double First Cousins | 0.125
First Cousins | 0.0625
Second Cousins | 0.015625
Unrelated | 0