Answer:
even though I am missing the question I believe that the correct answer to the question is; his cats will be brown (Dominant)
Step-by-step explanation:
this statement is true to the fact that on of his cats has the homozygous dominant gene BB. For their to be a chance of a white cat as an offspring both cats would either have to be Hetrozygous (Bb) or Homozygous recesssive (bb)