Mixed breed generation chart

F1 Generation
50% Purebred-A
50% Purebred-B
These dogs are the result of the breeding of two purebred dogs. Half of each dog is the mother’s breed, and the other half is the father’s breed.

Example: a labradoodle whose mother is a purebred labrador and father a purebred poodle.

F1b Generation
75% Purebred-A
25% Purebred-B
These are F1 backcrossed dogs. They result from the mating of an F1 parent and a P parent. This is used to intensify traits found in the P parent’s breed.

Example: a labradoodle whose mother is a labradoodle and father a poodle.

F2 Generation
50% Purebred-A
50% Purebred-B
F2 dogs are the offsets resulting from the mating of two F1 hybrids.

Example: a labradoodle whose mother is a labradoodle F1 and father a labradoodle F1.

F2b Generation
75% Purebred-A
25% Purebred-B
These are second-generation backcrossed dogs. Each F2b dog is the offset of an F1 parent and an F1 backcrossed (F1b) parent.

Example: a labradoodle whose mother is a labradoodle F1 and father a labradoodle F1b.

F3 Generation
50% Purebred-A
50% Purebred-B
Offsets coming from the mating of two F2 hybrid parents.

Example: a labradoodle whose mother is a labradoodle F2 and father a labradoodle F2.

Multi Generation
An F3 or higher-generation hybrid dog crossed with an F3 or higher-generation hybrid dog. This is a more generic nomenclature and is mostly expressed using the generation of each parent, such as F4 Labradoodle x F2 Cockapoo.

Example: a labradoodle whose mother is a labradoodle F3 and father a labradoodle F5.

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