What are the phenotypes and genotypes of the f1 generation in a Mendelian genetics problem about blood types?

Question

A man who has blood type A negative blood and a woman who has heterozygous Type B positive blood have children. What are the phenotypes and genotypes of the f1 generation?

Answer 1

I'm assuming the male has homozygous AA genotype because the question points out that the female is heterozygous B postive.

Thus, the male contributes only A- gametes, while the female contributes 1/4 B+, 1/4 B-, 1/4 O+ and 1/4 O-

So the genotypic ratios are:
1/4 A-B+
1/4 A-B-
1/4 A-O+
1/4 A-O-

and the phenotypic ratios are
1/4 AB positive
1/4 AB negative
1/4 A positive
1/4 A negative

Answer 2

Odd question as we usually don't use F1 for humans...
Also you don't say if man has homozygous or heterozygous A.
A type can be AO or AA must be --
B type can be BO or BB and +- or ++
do you mean heterozygous for both for woman homozyg for both for man?
AA vs BB would have only AB offspring
-- vs ++ would have only +- offspring
so children would be AB+-