Biology questions about genotype, phenotype, offsprings....etc. Thank you!?

Question

1.If IA and IB dominate i, which phenotype indicates the genotype when the alleles IA and i are present?

A) type A blood

B) type B blood

C) type AB blood

D) All of these answers.

2. A male has a genotype RrTt. What is the probability of his producing Rt sperm cells?

A) 0%

B) 25%

C) 50%

D) 100%

6. Smooth fur dominates rough fur; black and white fur are incompletely dominant and result in gray. A rough gray crossed with a rough gray would produce

A) all rough gray.

B) 1/2 rough black, 1/2 rough white.

C) 1/2 rough black, 1/4 rough gray, 1/4 rough white.

D) 1/4 rough black, 1/2 rough gray, 1/4 rough white.

7. Brown eyes (B) dominate blue eyes (b), black hair (H) dominates blond hair (h). In order to have an offspring ratio of 1/4 brown eyes, black hair, 1/4 brown eyes, blond hair, 1/4 blue eyes, black hair, and 1/4 blue eyes, blond hair, the genotype of the parents would have to be

A) bbHh X Bbhh.

B) bbhh X BbHh.

C) Bbhh X bbHh.

D) All Ture

Answer 1

1.A

2.B

6.D

7.A

Answer 2

1. A

2. B

3. D

4. A

a punnet square would help in these problems