GENETICS Help Please- I'm not sure if I'm on the right track...?

Question

1- A normally pigmented man marries an albino woman.They have 3 children,1 is albino.What is the Genotype of the father?

2- 2 intensely freckled parents have 5 children,2 that are intensely freckled 3 that aren't. (Assume the trait is governed by a single pair of alleles), is the intense freckledness an example of dominant or recessive inheritance,Why?

3- A woman is heterozygous for ABO blood group with an I^A allele and an i allele.A man is heterozygous for an I^B allele and an i allele.
a- what are the possible PHENOTYPE blood types of their offspring?
b-in what % will each occur?
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1- I think the genotype is 1:2:1 b/c I set up a Punnett square by putting N,n on one side & A, a at the top. My results were:
NA-Na
nA-na Idk if I set it up right though.

2- I think its a result of Dominant inheritance, but I can't explain why.

3- a- I think phenotype blood types would be A or B.
b- I think it would be 50% - 50% chance

Please Help Explain these!Thanks!

Answer 1

1. Pp (heterozygous)
2. Both parents are heterozygous (Ff)
Since both parents show intense freckles, it must be a dominant trait. In order to have non-freck. children, they both must be heterozygous. Ff x Ff ----> 3:1 ratio expected; frec. to non-freck.
3a) All four blood groups are possible
b)25% possibility for each

For#3, do a Punnett square- A i x B i