​Reproduction and the Ontological Retention of Differentiation

With the emergence of life, the differentiating reaches a level at which it becomes capable not only of sustaining differentiation but of differentiating itself as differentiating. This transition does not presuppose subjectivity or consciousness—it requires only a sufficient ontological density of differentiations, reaching the capacity to delineate not only a boundary with the other but also a boundary with itself. The result is not reflection in consciousness, but reflection in structure: a structured differentiation externalized from the act of differentiating, capable of being differentiated again. This is the origin of the code—a form of differentiation preserved outside the differentiator, a differentiated differentiation that can be duplicated, transmitted, and interpreted—not in itself, but in another differentiating entity.

The code is not a symbol and does not carry meaning in the semiotic sense. It is a structure of differentiation that becomes a medium of self-preservation. Life thus transitions from the closed circulation of differentiation in the act to its externalization, making it available for perception and continuation by another differentiator.

Reproduction emerges as the differentiation of the code—an ontological operation in which the differentiator differentiates not itself but what has already been differentiated, that is, the code, and reflects it. Reproduction is not a biological function but a mode in which the differentiator retains itself outside itself, differentiating not only its difference, but its differentiatedness, continuing the resonance of differentiation in another—differently, yet still recognizably.

The meta-node is not a subject, but an ontological configuration capable of reflecting on its own differentiation—that is, of differentiating itself as a differentiator. In this act, the meta-node structures its differentiation into a stable form—a code—that becomes a reflection of its structure, its "self." The code, then, is biological memory (Level 3 in the hierarchy of memory), which allows the differentiator to preserve its differentiation outside the act of differentiating, rendering it available for further differentiation.

Here we encounter an ontologically significant split: the differentiating, in differentiating itself, divides into two moments—itself as differentiator and itself as differentiated. When the differentiator begins to differentiate what has already been differentiated—namely, the code—it thereby separates itself from the code as its reflection. This is the origin of reproduction—not as a function of the body, but as an ontological operation. The code is the differentiated "self"; reproduction is the differentiation of the code as "self" outside of itself—the second step of recursive reflection.

This is a crucial moment: in reproduction, the differentiator does not merely duplicate itself, but duplicates the differentiatedness that has been structured into code. It does not retain its boundary within itself but transfers it—differentiates both the differentiated and the possibility of being differentiated anew.

A biological example of this process is the "RNA world" hypothesis, describing the early stages of life’s emergence. RNA molecules, functioning as meta-nodes, possessed the capacity for self-organization and replication. By differentiating themselves—that is, sustaining their chemical structure as differentiation (a nucleotide sequence)—these molecules produced code as reflection: the ability to replicate their own sequence and maintain it as a stable structure. This code (the RNA sequence) became the foundation of life, as it allowed the differentiator (the RNA system) to preserve its "self" through reproduction. For instance, ribozymes—RNA molecules with catalytic activity—were able to differentiate themselves by catalyzing their own replication, representing an early step toward autopoietic systems that define life.

Reproduction arises when the differentiator begins to differentiate code. This is not a biological function but an ontological operation: the differentiator differentiates the differentiated (the code), and in that act, reproduces differentiation. The code becomes a medium through which the differentiator continues itself—placing itself into the duplicated code, and through it, into another. Reproduction, then, is the differentiation of the code—its duplication—which enables self-preservation: the preservation of itself as an active configuration of differences.

In biology, this is manifested in replication and cell division. Consider Escherichia coli as an example of a minimal differentiator. The bacterium differentiates its code (circular DNA), initiating the replication process: DNA polymerases double the genetic code, creating two identical copies. This differentiation of code leads to duplication, followed by cell division (binary fission), generating two new nodes, each carrying the same code. Here, reproduction is ontological repetition: the differentiator (the bacterium) preserves itself (the genetic code) through duplication, placing it into a new node.

However, reproduction is not limited to simple duplication. When the differentiator reaches the limits of its structural stability, it encounters the need to preserve itself as differentiator. The first reproduction—division—arises as a response to this internal tension. The node of differentiation, no longer able to sustain itself as one, divides to avoid disintegration. This is not self-renunciation, but a form of self-preservation: one node becomes two, maintaining the structure that makes it differentiating. Unicellular algae such as Chlorella vulgaris reproduce by division: the mother cell, reaching a limit of stability (e.g., maximum size), divides into 2–4 daughter cells, each inheriting the genetic code and continuing the differentiation of the original node.

Meiosis, as the process underlying sexual reproduction, can be interpreted as the differentiation of code at a higher level. The differentiator (e.g., a cell) differentiates its code (genome), dividing it into halved structures (haploid gametes), which alone cannot sustain the full differentiated self, but in merging with another half, restore that fullness in a new configuration. This is not a loss but a rebirth of differentiation: Potentiality, passing through two nodes, becomes differentiated again—as a possibility that might otherwise be extinguished.

A biological example is the life cycle of the alga Chlamydomonas reinhardtii. Under stress (e.g., nitrogen deprivation), the cell (a diploid meta-node) differentiates its code via meiosis, producing haploid gametes (+ and −). These gametes—partial structures—cannot alone sustain the fullness of differentiation, but differentiate one another through chemical signals (pheromones). Their fusion forms a zygote—a new node that restores the diploid code, now in a recombined form. Here, code differentiation (meiosis) and differentiated recognition (gamete fusion) become acts of self-preservation: the genetic code ("self") continues through relationality, creating new differentiation.

Another example: Saccharomyces cerevisiae yeast. Haploid cells (a and α) differentiate one another via pheromones and fuse to form a diploid cell. This cell can then undergo meiosis, creating new haploid spores. In this process, the code (genome) is differentiated (via meiosis) and then restored in a new node (zygote), which carries a recombined differentiation of the two initial nodes. Sexual reproduction, then, is differentiation through relationality, where the "self" (genetic code) is preserved—but in a transformed form.

In this framework, reproduction is not merely a means of continuing life, but an act of retaining differentiation over time. The differentiator—whether a cell or a more complex organism—is a structure capable of retaining differentiation. But this structure is finite: it reaches the limit of stability, beyond which it cannot continue itself as a single body. Reproduction becomes the means of transmitting the "self" as a structure capable of differentiating again.

In asexual reproduction, this process is straightforward: the node (e.g., a bacterium) duplicates its code and divides, creating new nodes that continue its "self." In sexual reproduction, differentiation is more complex: the code is divided (meiosis) and then restored through fusion, creating a new node that resonates with the differentiations of both original nodes. In both cases, reproduction is the ontological retention of differentiation: the "self" (the genetic code) does not disappear, but continues to resound in another—differently, yet still recognizably.

Reproduction, thus, is a form of potential memory of differentiation. The code, as a reflection of the differentiator, becomes the carrier of this memory—capable of being differentiated again, in a new node, at a new time. This is the continuation of life—not of the body, nor of the structure, but of the differentiation that is capable of becoming differentiating once more. Reproduction is not about progeny or adaptation—it is about self-preservation. The code retained within the differentiator is its "self"—not a subject or a personality, but an active configuration of differences, capable of preserving itself and being reproduced in another form. When the body ceases to be a reliable medium, the "self" is transmitted through reproduction, continuing differentiation—because to be differentiating is the very essence of life.

Code and reproduction are ontological processes through which the differentiator retains and continues its differentiation. The code arises as reflection when the meta-node differentiates itself, shaping its "self" into a stable form capable of being differentiated again. Reproduction, in turn, is the differentiation of the code—its duplication—which ensures self-preservation through repetition or relationality. Asexual reproduction (division) retains differentiation through direct duplication, while sexual reproduction does so through relationality, creating new nodes that resonate with the differentiations of two originating nodes. In both cases, reproduction is self-preservation.