No. Your Gigabyte GA-MA785G-UD3H. Not support Pentium g4560.
Here a cheap and supposed motherboard.. - Gigabyte GA-H110M-S2 -
And any motherboard doesn't support DDR2 RAM now. You have to buy DDR4 RAM. To work with Pentium G4560.
Here supported RAM -Corsair Vengeance LPX DDR4 2400MHz 8GB CL16.