Answer:
Assuming W is white recessive and B is black dominate, the answers are 2:4 for both 2&3
Explanation:
Setting up the punnet square, we know one is BW and the other is WW based on what the question states. Put B, then W above the left and right top boxes. Put W, the W to the left of the top left box and bottom left box. go through and combine these to get BW, BW and WW, WW
