OpenStudy (anonymous):

Will fan & medal (: Blood type in humans is an example of trait that has multiple alleles. The alleles for type A blood and type B blood are codominant, and type O blood is recessive to both type A and type B. If a girl with type AB blood has a brother with type O blood and a sister with type B blood, which of the following genotypes could it be possible for their parents to have? a. AO and BO b. AB and OO c. AB and BO d. AO and AB

3 years ago
OpenStudy (goodkylekiller):

i think its a

3 years ago
OpenStudy (goodkylekiller):

but im not sure

3 years ago
OpenStudy (goodkylekiller):

@Abhisar

3 years ago
OpenStudy (goodkylekiller):

would it be a?

3 years ago
OpenStudy (abhisar):

Its A

3 years ago
OpenStudy (goodkylekiller):

sweet

3 years ago
OpenStudy (abhisar):

cross of AO and BO can lead to AB, BO and OO

3 years ago
OpenStudy (anonymous):

thank you (:

3 years ago
OpenStudy (abhisar):

$$\Huge\text{Anytime !}$$ $$\huge\ddot\smile$$

3 years ago