If it had been Speckeled Sussex over Dominique hens, then the chicks would have been sex-linked....
The other way, with the rooster being Dominique, all of the chicks will look Dominique.
Here is the calculator website, if you want to try it yourself.
I am not possitive what color Sussex count as, so I tried a couple of possibles.
All spangles, mottles (the spots), whatever they are genetically, are recessive, so will not show up.
http://kippenjungle.nl/Overzicht.htm
What about laced birds? is lacing a recessive trait?
I am thinking of keeping a pair of silver laced orps. If a laced roo mates with a solid hen (or vice versa) what's the possible outcome?
Is it a case where, the offspring would have to be bred back to the parent to see lacing again?