1) Unibrow
It's the dominant phenotype.
2) Uu
UU would also give one, but it's not possible to get one in this example. Make sure to double-check!
3) 50%
Each child can either get Uu or uu, So 50% is correct.
4) 0%
You can't have homo-zygous dominant because you can't have UU in this example.
5) 50%
Uu is hetero-zygous. And there is a 50% chance of getting it.
It won't let me submit unless I space out hetero-zygous and homo-zygous! I don't know why.
Please let me know if I am wrong on any of these!