My first thought as a biologist is you may get a general template with certain traits like eye, hair and skin tone more easily identifiable than bone or muscle density underlying the facial features. I am super interested in this question now that I see it. Based on my hobby use of gpt-3 it seems possible to train it on the genetic data available on ncbi.

A persons immune system is dictated by a system of genes called the HLA or human leukocyte antigen genes. So a persons ability to have tissue transplanted to another person could be predicted by these algorithms with some training I would bet. Maybe a big registry of possible donors and possible recipients could be created but then that brings up the ethical side of things with patient data and the 5 patient problem.