A man of 'A' blood group marries a woman of 'AB' blood group, which type of progeny would indicate that man is heterozygous ?
O
B
A
AB
B.
B
Progeny with blood group B will be produced when man is heterozygous, that is, IAIO.
Eustachian canal connects
middle ear with external ear
middle ear with internal ear
external ear with internal ear
pharynx with middle ear