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Punnett Trihybrid & Dihybrid Cross Visualizer

Compute 2-3 gene Mendelian crosses with a full Punnett square and forked-line branch diagram. Supports complete, incomplete and codominance inheritance.

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Quick start

Call this tool from your code in three languages.

cURL

curl -X POST 'https://api.elysiatools.com/en/api/tools/punnett-trihybrid-cross' \
  -H 'Content-Type: application/json' \
  -d '{"genes":"Seed color = Y,y\nSeed shape = R,r","parent1":"YyRr","parent2":"YyRr","display":"both","sort":"freq"}'

API reference

Send a POST request with your inputs as JSON. File parameters require a separate upload first.

Endpoint

HTTP

POST https://api.elysiatools.com/en/api/tools/punnett-trihybrid-cross

Parameters

Name	Type	Required	Description
genes	textarea	Yes	Declare 2 or 3 genes, one per line. Format: Trait = Allele1,Allele2 [mode]. Mode is optional (default complete).
parent1	text	Yes	Parent 1 genotype. Use the same letters as declared in the genes above.
parent2	text	Yes	Parent 2 genotype.
display	select	No	Both shows the full grid and the branch diagram. Punnett shows only the grid + ratios. Forked shows only the branch method.
sort	select

MCP integration

Add this tool to your Model Context Protocol server so AI agents can list and call it.

Server configuration

Add this block to your MCP client configuration:

mcp.json

{
  "mcpServers": {
    "elysiatools-punnett-trihybrid-cross": {
      "name": "punnett-trihybrid-cross",
      "description": "Compute 2-3 gene Mendelian crosses with a full Punnett square and forked-line branch diagram. Supports complete, incomplete and codominance inheritance.",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=punnett-trihybrid-cross",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

List available tools

After connecting to the SSE endpoint, list the exposed tools:

tools/list

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/list"
}

Call this tool

Invoke the tool by its id, passing arguments built from its parameters:

tools/call

{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "tools/call",
  "params": {
    "name": "punnett-trihybrid-cross",
    "arguments": {
  "genes": "Seed color = Y,y\nSeed shape = R,r",
  "parent1": "YyRr",
  "parent2": "YyRr",
  "display": "both",
  "sort": "freq"
}
  }
}

Chain multiple tools in one session with a comma-separated toolId list, e.g. /mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp (max 20).

Questions or issues? Contact [email protected]

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