Yes. They are the same as unfertilized eggs until something raises the temp above 85 degrees for more that 24 hours. Even then, development usually doesnt happen until temps hit 99.5 deggrees for 24+hours.
Don't be mistaken with an unfertile egg which has a white spot where the bullseye would be if it were fertilzed. There is a white spot with a definite ring around it if it IS fertile.