There are three alleles controlling the blood types ABO. I A and I B are codominant genes, so that the combination I A I B produces the blood type AB. The third allele I O is recessive to the other two alleles. Indicate which of these parents could produce the given child:
Parents Child Yes or No
(a) A x AB B
(b) A x O A
(c) A x B O
(d) A x AB O
(e) A x AB B
(f) B x B O
(g) AB x AB A

Question

There are three alleles controlling the blood types ABO. I A and I B are codominant genes, so that the combination I A I B produces the blood type AB. The third allele I O is recessive to the other two alleles. Indicate which of these parents could produce the given child: 
   Parents Child Yes or No 
 (a) A x AB B   
 (b) A x O A   
 (c) A x B O   
 (d) A x AB O   
 (e) A x AB B   
 (f) B x B O   
 (g) AB x AB A

Quizplus · Accepted Answer

The Answer of There are three alleles controlling the blood types ABO. I A and I B are codominant genes, so that the combination I A I B produces the blood type AB. The third allele I O is recessive to the other two alleles. Indicate which of these parents could produce the given child: 
   Parents Child Yes or No 
 (a) A x AB B   
 (b) A x O A   
 (c) A x B O   
 (d) A x AB O   
 (e) A x AB B   
 (f) B x B O   
 (g) AB x AB A

There Are Three Alleles Controlling the Blood Types ABO