What does a mixed person and white persons baby look like?

It all depends actually. But brown eyes are very dominant, so if one of the parents have brown eyes, the baby will most likely have brown eyes as well. An average human has two sets of 23 pairs of chromosomes which is 46 in total. The baby will get 23 from chromosomes from his Mother, and the other 23 from its Father. so the baby is literally half of both of its parents. If the chromosomes are XY, then it it a boy. If it is XX it is a girl. The baby will most likely have characteristics that are very dominant in older generations of that family.