probability problem? please answer at least the last two question?

QX + if bob parents share a trait , then the offspring will have that trail. both parents short then offspring short too similary with blueg Ryes However if the parents have different heights their offspring will be 75% taller and if the parents have different colored eyes , their offspring . will equally likely have red and blue eyes . in an experiment , you select the parent traits uniformly at random and independently of each other . Namely each parent is equally likely to be short or tall , and to have red or blue eyes a) what is the probability that offspring is short?. b) if the offspring bas blue eyes a bat is the probability that both parents had blue eyes " ) Is the offspring baving red eyes independent of the offspring having blue eyes? d ) finally select two red eyed # one short and one tall and breed there twice , producing two offspring . Then breed the two offspring to create a new offspring. what is the probability the grandchild is fall with red eyes