Blood Type Genetics Quiz

Larah has blood type O. Which of the following must be true about her parents' blood types?

• At least one parent must have type O

• Both parents must have at least one recessive allele (i)

• One parent must have type AB

• Both A and B are correct

Hannah has blood type AB. Which of the following is impossible for her parents’ blood types?

• A and B

• AB and O

• AB and B

• AB and A

In the blood typing procedure, if a person’s blood agglutinates with anti-A serum but does not agglutinate with anti-B serum, what is their blood type?

• Type A

• Type B

• Type AB

• Type O

During a routine blood typing procedure, a patient's blood sample reacts with anti-A serum but not with anti-B serum. What is the most likely blood type of the patient?

• Type A

• Type B

• Type AB

• Type O

A blood sample from Mrs. Ramos shows no reaction with anti-A or anti-B serum. What is Mrs. Ramos's blood type?

• Type A

• Type B

• Type AB

• Type O

• Type O

Devine has blood type O and is claiming that Welmer, who has blood type AB, is the father of her baby, Renz, who also has blood type O. Welmer denies paternity. Based on genetics, what is the best conclusion?

• Welmer is not the father because an AB parent cannot pass an O allele

• Welmer is the father because blood type can mutate

• Welmer could be the father if Devine carries a hidden B allele

• Blood type alone is not enough to determine paternity

Rosa, a 22-year-old woman, is searching for her biological father. She has blood type O, and her mother, Linda, has blood type A. Rosa has three possible fathers based on records: Miguel (blood type O) John (blood type A) Robert (blood type AB) Which man can she immediately rule out as her father?

• Miguel

• John

• Robert

• None, they are all possible fathers

Mr. and Mrs. Reyes are reviewing their family’s medical history. Mr. Reyes has blood type AB, and Mrs. Reyes has blood type A. One of their children, Daniel, has blood type O. What does this indicate?

• There was a mistake in the blood type records

• Mrs. Reyes must be heterozygous (IAi)

• Mr. Reyes cannot be the biological father

• Daniel inherited his blood type from a hidden allele

Samantha has blood type B, and her husband, Alex, has blood type AB. They are shocked to learn that their newborn daughter, Mia, has blood type O. What is the best explanation?

• A rare genetic mutation occurred

• The child was adopted or there was a paternity issue

• The AB parent must carry an O allele

• This is a normal outcome in blood inheritance

A baby is born in a hospital, but there is confusion about who the biological mother is. The baby has blood type B. Two women, Meryll and Thrisha, both claim to be the mother. Meryll has blood type A, and Thrisha has blood type O. The father’s blood type is AB. Who is the most likely biological mother?

• Meryll

• Thrisha

• Either woman could be the mother

• Neither woman could be the mother.