Question

Does a girl’s appearance and blood type come from her father or her mother?

Answer

A child’s appearance and blood type are determined by the genes of both parents, not solely from either the father or the mother. Taking blood type as an example, a child’s blood type may inherit from either parent or both. The genetic rules for blood types are as follows:

  1. If both parents have A or B blood types, the child’s blood type could be A, B, or O.
  2. If one parent has A or B blood type and the other has O type, the child’s blood type could be A, B, or O, but not AB.
  3. If one parent has AB blood type and the other has O type, the child’s blood type will only be A or B, not AB or O.