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This quiz contains 10 questions from a mix of 1 subtopics.

What does the term 'multiple alleles' refer to?

genes that exist in more than two allelic forms

genes that exist in less than three allelic forms

genes that exist in only two allelic forms

genes that exist in only one allelic form

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1

An individual can have how many alleles of a specific gene at any one time?

three

two

four

one

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In the ABO blood group system, which alleles are codominant?

(Select all that apply)

IA

IO

IB

all of the above

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2

Which allele is recessive in the ABO blood group system?

IA and IB

IB

IA

IO

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What blood type phenotype would an individual with the genotype IAIO have?

blood type O

blood type AB

blood type B

blood type A

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What antigens would be present in an individual with the genotype IAIB?

B

A

none

A and B

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What blood type phenotype would an individual with the genotype IOIO have?

blood type AB

blood type A

blood type B

blood type O

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What offspring phenotypes could a group A parent (IAIO) and a group B parent (IBIO) potentially produce?

any of the ABO phenotypes

only group A or group B

only group A or group O

only group B or group O

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What offspring phenotypes could two group O parents potentially produce?

only group A or group B

only group A or group O

only group O

any of the ABO phenotypes

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What is the phenotypic ratio of blood type A : blood type B : blood type AB : blood type O in the offspring of a heterozygous parent with blood group A (IAIO) and a heterozygous parent with group B (IBIO)?

1:2:1:1

2:1:1:1

1:1:1:1

1:1:2:1

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1