If the parents have black hair then all the kids would have black hair (a)
if one parent has blonde hair and the other has black hair then 2 kids would be blonde and 2 would have black hair (d)
if the parents have blonde hair then the kids would have blonde hair (c)
If it has valves then it is a vein.
You'r <span> Hypothalamus partially controls your hunger!
Happy to assist!</span>
