Question

8) There is a blood type gene with three alleles A, B and O.  A is dominant to O, B is dominant to O and A and B are co-dominant/incompletely dominant. What are the likely genotypes if a mother has the genotype AA and the father has the genotype BO?

Group of answer choices

a) 50% AA 50% BB

b) 50% Ab blood 50% A blood

c) 25% AB, 25% AO, 50% OO

d) 50% AB 50% AO

9) There is a gene that affects the shape of red blood cells. The N allele codes for normal shaped blood cells. The S allele codes for sickle-shaped blood allele. These alleles are co-dominant/incompletely dominant. There are three possible combinations: NN (normal) SS (sickle-cell anemia) and NS (sickle-cell trait). If the mother has the genotype NS and the father has the genotype NN: what are the likely traits/phenotypes of children?

Group of answer choices

a) 25% Normal 50% Sickle-cell trait 25% Sickle-cell anemia

b) 50% Normal blood 50% Sickle-cell anemia.

c) 50% Normal 50% Sickle-cell trait

d) 100% Sickle-cell trait

10) Let's say that a flower has two alleles determining coloration. If the flower has the genotype RR, the flowers are red. If the flower has the genotype YY, the flower is yellow. If the flower has the genotype RY, the flower is orange. What does this suggest about the alleles?

Group of answer choices

a) R and Y are both recessive

b) R is dominant to Y

c) Y is dominant to R

d) The alleles R and Y are co-dominant/incompletely dominant.

Answer 1