When a pedigree is constructed, autosomal dominant disorders typically appear only in males appear only in females appear in every generation seem to disappear in one generation, only to reappear in the next generation?

I believe the answer is that they appear in every generation.

Autosomal dominant is a pattern of inheritance in which an affected individual has one copy of a mutant gene and one normal gene on a pair of autosomal chromosomes. Thus in an autosomal dominant disease, if you inherit the abnormal gene fro one parent, you can get the disease.