Question

1. With regard to the ABO blood types in humans, determine the genotype of the male parent shown here:

Male parent: Blood type B; his mother type O

1. I^BI⁰
2. I^BI^B
3. I⁰I⁰
4. I^BI^A
5. I^AI⁰

2. With regard to the ABO blood types in humans, determine the genotype of the female parent shown here:

Female parent: Blood type A; her father type B

1. I^BI⁰
2. I^BI^B
3. I⁰I⁰
4. I^BI^A
5. I^AI⁰

3. ( 2 Points) Predict the blood types of the offspring that this couple may have (one or more answers) -

1. I^BI⁰
2. I^BI^B
3. I⁰I⁰
4. I^BI^A
5. I^AI⁰

Predict the proportions of the blood types of the offspring, the ratio of each blood type. Show your work, and explain in a sentence or two.

Answer 1

Answer:

1).

a). IBIO

B type blood has two types of genotypes, IBIB or IBIO. Male got an allele IO from his mother and father would have contributed IB allele. Therefore the genotype of male is IBIO.

2).

e). IAIO

A type blood has two types of genotypes, IAIA or IAIO. The female got an allele IO from her father and mother would have contributed IA allele. Therefore the genotype of male is IAIO.

3).

IBIO x IAIO ---Parents

	IA	IO
IB	IAIB (AB type)	IBIO (B type)
IO	IAIO (A type)	IOIO (O type)

AB type = ¼ or 25%

A type = ¼ or 25%

B type = ¼ or 25%

O type = ¼ or 25%