The answer for this is true :)
If you didn't forgot to put the letters in caps this is the explanation:
100% of the possible gametes will contain the a alelle.
possible combination of gametes all result in the same: ab or ab
Just to compare if the genotype was Aabb
The gametes would be : Ab or ab
I'm not completely sure but I came up with Carbon dioxide, methane, water vapor, and nitrous oxide. I hope this is right and maybe helps you. Good luck!!
The answer to this question is Fossil Fuels
The answer to your question is "maggots"