A father is blood type B and a mother is blood type A. They have a child with blood type O. What are the genotypes of the father and mother?
A) The father must be BB and the mother must be AO. B) The father must be BO and the mother must be AA. C) The father must be BO and the mother must be AO. D) The father must be BB and the mother must be AA. E) This isn't possible.
Based on the information below, answer the following question(s), assuming complete dominance. "In humans, the ability to roll the tongue is a dominant trait; the inability to roll the tongue is a recessive trait." -If two individuals homozygous dominant for this trait have a child, what is the chance that the child will not be able to roll his tongue?