The definition of a dominant gene is a gene that the heterozygous and homozygous versions look the same. Dominant genes still have a super but it looks no different than the het version. Don't know why people think a dominant gene would throw all morphs.
This is what we were taught in genetics (years ago)
dominant gene - gene that produces the same phenotype in the organism whether or not its allele identical;
This, to me, means that all offspring would carry one copy of the gene. But I am not a genetics genious.