Question

can a father with o blood group and mother with AB blood group have o blood group child according to ABO bloodgrouping?​

Answer 1

Answer:

Human blood group inheritance is the example of codominance and multiple alleles. It is governed by three alleles namely I  

A

, I  

B

 and I  

O

. I  

A

 and I  

B

 show codominance while allele I  

O

 is recessive to both I  

A

 and I  

B

.  

Genotype of a person with “A” blood group can be I  

A

I  

O

 or I  

A

I  

A

 and that of parent with AB blood group is I  

A

I  

B

.  The alleles I  

A

, I  

O

 and I  

B

 can make three genotypic combinations, namely I  

A

I  

A

, I  

A

I  

O

, I  

A

I  

B

 and I  

B

I  

O

. Thus, the possible blood group of their children are A, B and AB. To have a child with O blood group, both parent should have at least one I  

O

 allele

Explanation: