Punnett Square with widows peak and ?

to set up a punnet square you just use two letters to represent the genes: because a widow's peak is dominant it's letters would be BB or Bb. you then make a chart with one parents genes going up/down and the other's going left/right, with one letter in each column. then, you will have four boxes in the center of your chart. in each box match up the parent's genes (thre should be 2 letters in each box.) for its 50/50 each time they have a baby.