TexasBlues
Songster
BCM x EE would be an F1.
If you breed the f1 back to the BCM, that would be a BC1(backcross 1).
If you breed BC1 x BC1 you get an f2.
If you breed BC1 back to the marans again, you get a BC2.
Here’s a better description of the generations:
https://silverhomestead.com/f1-vs-back-cross-olive-eggers/
If you breed the f1 back to the BCM, that would be a BC1(backcross 1).
If you breed BC1 x BC1 you get an f2.
If you breed BC1 back to the marans again, you get a BC2.
Here’s a better description of the generations:
https://silverhomestead.com/f1-vs-back-cross-olive-eggers/