Isn't there likely a large epigenetic component?

For single celled organisms "epigenetic" effects carry non-basepair state from a single-cell parent cell individual to its single-cell children cell individuals after cell division,

For multi-cellular organisms "epigenetic" effects carry cell type state from lesser differentiated cell type parent to identical or higher differentiated cell type children cells in the same individual. For example A->B+C where A,B,C are distinct cell types, or A->A+B, etc.

You can't just copy paste the "individual level" concept of "epigenetic effects" from single-celled organisms to multicellular organisms. Yes epigenetic state transfer exists in multicellular organisms but it still carries it from parent cell to child cell, not from multicellular parent individual to multicellular child individual thats just brainfart.