BC1, or Back Cross to Parent Line one.
On genetic breeding.
Parent line 1 = P1(Dixie Rainbow)
Parent line 2 = P2(Barred Rocks)
The cross of both Parent Line = F1 or Filial generation 1
The cross of both F1s together will be = F2 or Filial generation 2
The back cross of F1 to P1 will be = Back...
Yes, very similar path indeed.
That dark pullet you recently posted that look strikingly similar to a true "Birchen" pullet(google Birchen Maran) its because she is segregating Extended black with Columbian restrictor(think about a black sex link hen but instead of gold she is Silver) or an...
Was this really unexpected? This is basically Mendelian Genetics and to be precise Mendel's second law also known as the law of independent assortment.
Let's make this simple as possible.
Barred Rock genotype: E/E, co+/co+, S/S, B/B
Dixie Rainbows: eWh/eWh, Co/Co, s+/- and b+/b+
The cross...