Pure-breeding black-feathered chickens are crossed with pure-breeding white-feathered chickens. Every offspring in the F1 generation has both black and white feathers. What ratio of offspring phenotypes will be produced when two chickens from the F1 generation are crossed?
- A1 black : 1 white
- B1 black : 2 black and white : 1 white
- C3 white : 1 black
- D3 black : 1 white