zlacker

>>qqqqqu+(OP)
Another frustrating one - what is heredity? If it's possible to inherit something due to a shift in behavior (i.e. it's a cultural change that leads to a biochemical change), how does that connect neatly to mendalian inheritance?

>>qqqqqu+d6
Are you talking epigenetics? It's relatively closely related to mendelian inheritance. At a high level view, if genes are present in your genome that aren't "on" in a previous generation, but due to changes in behavior become more active, then in a future generation that gene could be expressed more. It's not that the genes have changed their code, they are just flipped on or off.

>>epmayb+R8
No, more things that are modifications without any genetic basis - like myopia. Doesn't seem to have any genetic/epigenetic basis. It's purely a physical use case, where the eye matures improperly if it's only exposed to near-field work.

>>qqqqqu+h9
One hypothesis: kids learn to do what their parents do. If near field work or hobbies cause the problem then it follows that some kids will "inherit" it through mimicry.