I'm wondering the same thing but I feel like reading HY for genetics may be overkill given that genetics is but a component of so many different pathologies. Outside of basicly knowing AR, AD, X-linked R or D, Mitochondrial diseases and a few translocations here and there, i can't imagine genetics being a huge standalone. You may have to know it in the context of other diseases and I think First Aid does present genetics with almost everything.