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

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.

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