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In humans, the ABO blood system is controlled by multiple alleles. The Ia antigen allele produces A, B antigen Ib alleles and allele i produces no antigen. The dominance hierarchy is Ia = Ib> i. A) A person's blood group 0 can give you an AB blood person?. Clearly explain your answer (presence or absence of antigens or antibodies).

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Irving Heathcote
Irving HeathcoteLv2
28 Sep 2019

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Related questions

Find the correct statement (may require you to draw pedigrees and Punnett squares) A) A father with A blood type and a mother with B blood type, will always produce
children that are AB
B) A person with ii alleles will produce red blood cell that contain glycolipids with
galactosamine and galactose sugars
C) A person with the A blood type can only give blood to an A or O individual
D) If an AB father conceives a child with an O mother, the children have a 50%-50%
chance of being either AB or O
E) Each person has three alleles of the blood type gene
F) The IA allele is codominant to the i allele
G) A person with a B blood type will produce antibodies against the A blood type antigen

a). The gene that codes for the ABO blood group in humans has three alleles. In a population of 1000 people, the frequency of the IA allele is 0.2, and the frequency of individuals in the population with type O blood is 0.49. What is the frequency of the IB allele in this population? Show your work.

b). In the same population as above, what is the frequency of people with type A blood? Show your work.

IAIA or IAi so p2 +2pq

O = 0. 49 = Q2 = square root (0.49) = 0.7

(0.2)2 + 2 (0.2)(0.7) = 0.32

I think I did part 2 right but im lost at part a.

In humans, the ABO blood system is controlled by three alleles: IA, IB, and i. Betsy and Bob have two children named Billy and Belle. Betsy has type A blood and Bob has type B blood. Billy’s blood is type AB, but Belle’s blood type is type O. Use a Punnett Square to answer the questions below.

What is Betsy’s genotype for her blood type? ________________

What is Bob’s genotype for his blood type? _________________

What is Billy’s genotype for his blood type? _________________

What is Belle’s genotype for her blood type? ________________

If Betsy and Bob have a third child, what is the probability the child would have type B blood? Explain. ________

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