Can alcoholism skip generations

In a sense. The tendency to become alcoholic is inherited, but one does not become an alcoholic if one does not drink. Children of alcoholics may be teetotalers, not wanting to be like their parents. Their kids, however, not having had the awful experience of living with a drunk, may drink out of curiOSity or rebellion. If the tendency has been passed to them genetically, they have a good chance of becoming alcoholics. Thus, the disease has "skipped" a generation, but only in the sense of not having become active.

There is also a possibility -- if not a probability -- that there is true genetic skipping involved, in the sense of dominant and recessive trait combinations. Not enough is yet known about the details of the genetics related to Alcoholism to be able to state that with certainty, but it would seem to be compatible with what we know about heredity in general.