Answer:
The blood group of an individual with an o allele and an allele for blood group is A blood group.
Explanation:
Blood group A has two A alleles. Alleles of A blood group is dominant allele so if a person has only one copy of the allele with a recessive allele of O blood group, is enough to dominate and the blood group of the person would be A blood group.
Alleles of the O blood group are recessive in nature if present with other blood groups. For O blood group person must have both alleles of O blood group.
Thus, the Blood group of individual with an o allele and A allele for blood group is A blood group.