Max Map Distance 50 cM Unlinked Limit Note Generator
Correct the misleading maximum-50-cM milestone premise. Bounded exact-key educational reference only; observations and applicability must be established independently.
Description
Correct the misleading maximum-50-cM milestone premise.
Observed recombination fraction and genetic map distance are related but distinct quantities. A reference note can prevent treating the two-locus fraction limit as a universal maximum map length.
When to use this tool
Correct the misleading maximum-50-cM milestone premise.
- Prepare the supplied key fields for this operation.
- Compare the complete example with the representation used by your own input before carrying the result into another step.
How to use the tool and how it works
- Enter key. Use the exact text syntax, units and index conventions explained below.
- Run the tool. If input validation fails, correct the supplied fields before interpreting any result.
- Read result.reference. Interpret false, null and empty lists using the distinctions below; they can be valid outputs.
Supply key exactly as one of "limitation". Check for that own key in the fixed local table and return its stored reference text unchanged. An unsupported key is an input error, rather than a null result; there is no network request, fuzzy matching or dynamic text generation.1
| Input field | Meaning and representation | Accepted input |
|---|---|---|
| key | Exact stored-entry key; spelling and case must match. | "limitation" |
| Output field | Interpretation |
|---|---|
| result | Object containing the named outputs below. |
| result.reference | The unchanged stored text for the supported exact key; unsupported keys cause an input error. |
{
"input": {
"key": "limitation"
},
"output": {
"result": {
"reference": "Observed recombination fraction is at most 0.5 in the standard two-locus model. Map distance can exceed 50 cM because multiple crossovers are hidden; 50 cM is not a universal maximum map length."
}
}
}Limitations and assumptions
- The lookup does not estimate recombination, convert fractions with a mapping function or infer crossovers. It returns one stored conceptual limitation note.
- Every declared top-level field is required and unexpected fields are rejected. Numeric inputs must be finite; ordinary text fields are bounded to 8,192 UTF-16 code units, with tighter operation-specific limits where stated.
- Ordinary string lists have at most 128 entries of at most 128 code units each; numeric lists and matrices have separate bounded size checks. Nonfinite results and excessively large serialized outputs are rejected.
- Indexes are zero-based and spans have an exclusive end unless explicitly stated otherwise. A valid false, null or empty-list result is distinct from malformed input.
Alternative or Complementary methods
Keep model assumptions and phenotype-category order with each result. Ratio tolerance screens differ from goodness-of-fit inference, and sequence matches or likelihood products do not independently establish a biological mechanism or personal identity.
References
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