Codominance & Multiple Alleles

Question 1

What is the ABO Blood Group system?

Answer 1

it has 3 alleles
A and B are codominant - always expressed in the phenotype

O is recessive to both of them

Question 2

What is the parent 1 genotype and parent 2 genotype in codominance?

Answer 2

parent 1 genotype = I^B and I^O

parent 2 genotype = 1^A and I^O

Question 3

What is parent 1 and 2’s gametes in codominance?

Answer 3

I^B and I^O - parent 1 gamete

I^A and I^o = parent 2 gamete

Question 4

What is the f1 generation for the ABO blood group?

Answer 4

genotype = I^A I^B, I^A I^O, I^B I^O, I^O I^O

phenotype - AB, A B , O