Epigenetics and the Instantiation of Biological Potential

In our reframing of the gene, we moved from the idea of the gene as a self-replicating unit to a model in which genes are elements of biological potential—instantiated differently across developmental, cellular, and environmental contexts. Nowhere is this more evident than in epigenetics: the study of how gene activity is regulated without altering the DNA sequence itself.

Epigenetics doesn’t just complicate the replicator model; it dismantles it. It shows that what matters is not just what is inherited, but how it is instantiated—and that this instantiation is contextually shaped, dynamically regulated, and in some cases, even heritable across generations.

Instantiation in Epigenetic Systems

Epigenetic markers—such as DNA methylation or histone modification—don’t change the underlying genetic code. Instead, they modulate the actualisation of potential. They determine:

• Whether a gene is switched on or off.

• How strongly a gene is expressed.

• When and where in the organism this occurs.

Thus, the genome is not a script to be read linearly but a landscape of potential, with epigenetic mechanisms acting as gates, filters, and signal routers. The same sequence of nucleotides may give rise to radically different outcomes depending on the epigenetic systems that mediate its instantiation.

Epigenetic Individuation

One of the most striking features of epigenetics is how it individuates genetic potential. Every cell in a multicellular organism contains essentially the same genome, yet the epigenetic configuration of those cells diverges widely. This means that:

• Epigenetic individuation occurs at the cellular level, enabling differentiation of cell types.

• It continues throughout the life course, shaping responses to nutrition, stress, trauma, and environmental cues.

• It can be transgenerational, meaning that actualisations of potential may shape the potential available to the next generation—not by altering DNA, but by altering how it is accessed.

From this vantage point, epigenetics is not a supplementary mechanism layered on top of genetics; it is a core dimension of biological actualisation. It embodies the principle that meaning—here, in the form of functional biological outcomes—arises not from isolated sequences but from systems of constrained potential unfolding across time.

Rethinking Heritability

In the traditional gene-as-replicator model, heritability is about the transmission of genetic material. In this alternative model, we might distinguish between:

• Genetic inheritance: the transmission of biological potential (i.e., the genome).

• Epigenetic inheritance: the transmission of constraints on potential (e.g., methylation patterns).

• Developmental inheritance: the ongoing instantiation of potential through interaction with ecological and social environments.

This broader framing allows us to see how heritability is not just about copying, but about the reconstruction of conditions under which potential is realised. This is especially relevant when thinking about how early life conditions, parental experiences, and environmental exposures can shape the developmental trajectory of organisms—sometimes across multiple generations.

Toward a Relational Biology

Epigenetics gives empirical traction to a relational ontology of life. It shows that:

• Potential is structured, but never prescriptive.

• Context is constitutive, not secondary.

• Variation is not noise, but a central feature of biological meaning-making.

Rather than seeing the genome as a stable blueprint over which epigenetics casts a fuzzy shadow, we might say that the genome is a field of potential, and epigenetics is one of the systems through which that field is organised, modulated, and instantiated.

In this way, epigenetics becomes a key locus for thinking about how biological systems are not just self-maintaining, but self-actualising—developing along paths shaped by their history, structure, and situatedness.