I need help with my homework :/?

okay well you have to do a punnett square for each one. the first one would be BB by bb and you would end up with all of them black, but half are carriers. then the second one is Bb by Bb, and the third one is Bb by bb. Do your own punnett squares and the ratios are easy just count up which are zygous or heterozygous and any with a capital B are black and two bb is white.