Question

Question 6
1 pts
AB Oare the alleles for human blood type. Each person can have two alleles - one from mom and one from dad. If an "Oallele is present, but is not
homoryositis recessive. A or Bare present they are dominant - and if TOGETHER both are expressed.
Human ABO blood type is an example of a trait that exhibits

Answer 1

Answer:

Human blood type exhibits codominance as well as normal Mendelian inheritance (known as dominant/recessive)

Explanation:

Neither the A gene nor the B gene is dominant to the other.  They both share in the phenotype AB blood type.  Think of co-captains of a team sharing responsibilities.  

A and B are both dominant to O which is recessive.  If a person inherits A & O they have blood type A.  Likewise, if a person inherits B & O they have blood type B.  Only if they inherit  O & O (homozygous recessive) will they have type O blood.