Hey there!
Here is your answer:
Since there are not options im going to go with what i know:
(Alleles)
heterozygous: A,a
homozygous: a,a
Therefore the Punnett square should look like this:
A, a
a IA,a I a,a
a IA, a I a, a
Therefore the answer is 50% A,a , and 50% a, a!
If you need anymore help feel free to ask me!
Hope this helps!
~Nonportrit