Goldendoodle Generations

I get the question a lot about what does F1 and F1b mean?  
Here are the answers simplified.

• Golden Retriever x Poodle = F1 (50% Golden Retriever & 50% Poodle) ​

 This first generation Goldendoodle is what most people think of as a “classic” Goldendoodle, with the DNA split roughly 50/50 between the two breeds.

• F1 x F1 = F2 (50% Golden Retriever & 50% Poodle)

• F1 x Poodle = F1B (25% Golden Retriever & 75% Poodle)

A first generation of back cross is the result of breeding an F1 Goldendoodle with a Poodle. 

• F1B x Poodle = F1BB (12.5% Golden Retriever & 87.5% Poodle)

As the generation typically closest to a Poodle in DNA, the F1BB Goldendoodle is backcrossed twice with a Poodle.  This means they have an F1B Goldendoodle parent and a Poodle parent.

• F1B x F1B = F2B (25% Golden Retriever & 75% Poodle)

• F2 x F2 = F3 (50% Golden Retriever & 50% Poodle)

• Multigeneration = A puppy born from multiple generations of goldendoodle parents. Multigen Goldendoodles usually have around 65%+ Poodle & 35% Golden Retriever.

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