Clear Onyx — Mitosis Reader v0.1

Declared boundary. This is a finite, inspectable teaching model of a toy diploid genome with three homologous pairs. It represents semiconservative copying, checkpoints, spindle allocation, and retained event history. Molecular forces, protein structures, gene expression, metabolism, developmental signaling, disease, and clinical prediction remain outside this model's carrier.

CELL-CYCLE CARRIAGE

Tempo G1 / S GATE · READY

CHECKPOINT STUDY

RECEIPT

The receipt contains only declared toy-genome events and deterministic snapshots. A replay establishes model consistency.

Gold marks carried parental template strands; violet marks newly synthesized complement strands; pink marks a declared unresolved mismatch. Geometry is schematic and phase-indexed.

TOY 2n = 6 GENOME

Parental strands, new complements, and copied loci

Each row is one toy chromosome. During S phase, the bright copying frontier advances across all six templates. Once copying completes, each sister chromatid holds one retained parental strand and one new complement strand.

Base letters form a fixed illustrative genome. The model derives complements with A↔T and C↔G; it does not claim to render a natural organism's genome.

BIOLOGICAL CARRIER

What the model performs

G1 contains six unreplicated toy chromosomes. S phase copies every locus once. G2 admits the cell only when the copy is complete and complementarity is restored. Mitosis separates sister chromatids; cytokinesis closes two equally provisioned daughter-cell records.

Parental template

Retained molecular sequence available for copying.

Copy difference

Uncopied loci or a declared mismatch.

Transport

Replication completion and spindle-directed chromatid movement.

Comparison

Complementarity, copy-once, and alignment checks.

Return

One complete chromosome set in each daughter cell.

Receipt

Append-only event history plus deterministic replay.

SOURCE-BOUND INTERPRETATION

What remains open

The reader is a formal teaching construction with native biological rules. Its structural lens describes retained form through division; it does not derive DNA chemistry from the Clear Onyx carrier or substitute its display for empirical measurement.

The biology anchors are semiconservative replication, once-per-cycle genome copying, checkpoint control, chromatid segregation, and cytokinesis. Meiosis, recombination, fertilization, development, and gene regulation belong in later, separately bounded instruments.

BIOLOGICAL REFERENCE NOTE

[1] Meselson, M. & Stahl, F. W. (1958). The Replication of DNA in Escherichia coli. Proceedings of the National Academy of Sciences 44, 671–682. doi:10.1073/pnas.44.7.671. The model's one-parental/one-new-strand teaching rule is bounded by this semiconservative result.

[2] National Human Genome Research Institute. DNA Replication; Cell Cycle; Mitosis. These reference pages supply the ordinary cell-cycle distinction used here: S phase copies DNA, and mitosis distributes a copy of each chromosome to each daughter cell.

The displayed genome, timing, checkpoint thresholds, colours, and geometry are declared illustrative choices of this instrument.

EXACT TOY-GENOME DECLARATION

MODEL + REPLAY DECLARATION

Mitosis Reader one cell · one copying cycle · two daughter receipts