Education

Test Cross Analyzer (determine homozygous vs heterozygous)

Determine genotype (AA vs Aa) by test cross with aa. Any recessive offspring proves heterozygous; zero recessive suggests homozygous with P = 0.5^n. Derived from Mendel 1866, Griffiths, Hartl & Clark 2007, StatPearls. Educational use only.

json· JSON resultOpen tool

Quick start

Call this tool from your code in three languages.

cURL

curl -X POST 'https://api.elysiatools.com/en/api/tools/test-cross-analyzer' \
  -H 'Content-Type: application/json' \
  -d '{"dominantCount":47,"recessiveCount":53,"alpha":"0.05","decimalPlaces":4}'

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/test-cross-analyzer

Parameters

Name	Type	Required	Description
dominantCount	number	Yes	Number of offspring showing the dominant phenotype.
recessiveCount	number	Yes	Number of offspring showing the recessive phenotype.
alpha	select	Yes	Significance level for the heterozygosity test.
decimalPlaces	number	No	—

Response format

JSON result

JSON

{
  "key": {...},
  "metadata": {
    "key": "value"
  },
  "error": "Error message (optional)",
  "message": "Notification message (optional)"
}

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-test-cross-analyzer": {
      "name": "test-cross-analyzer",
      "description": "Determine genotype (AA vs Aa) by test cross with aa. Any recessive offspring proves heterozygous; zero recessive suggests homozygous with P = 0.5^n. Derived from Mendel 1866, Griffiths, Hartl & Clark 2007, StatPearls. Educational use only.",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=test-cross-analyzer",
      "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": "test-cross-analyzer",
    "arguments": {
  "dominantCount": 47,
  "recessiveCount": 53,
  "alpha": "0.05",
  "decimalPlaces": 4
}
  }
}

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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Name

Type

Required

Description

dominantCount

number

Yes

Number of offspring showing the dominant phenotype.

recessiveCount

number

Yes

Number of offspring showing the recessive phenotype.

alpha

select

Yes

Significance level for the heterozygosity test.

decimalPlaces

number

—

{ "mcpServers": { "elysiatools-test-cross-analyzer": { "name": "test-cross-analyzer", "description": "Determine genotype (AA vs Aa) by test cross with aa. Any recessive offspring proves heterozygous; zero recessive suggests homozygous with P = 0.5^n. Derived from Mendel 1866, Griffiths, Hartl & Clark 2007, StatPearls. Educational use only.", "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=test-cross-analyzer", "command": "", "args": [], "env": {}, "isActive": true, "type": "sse" } } }

{ "jsonrpc": "2.0", "id": 2, "method": "tools/call", "params": { "name": "test-cross-analyzer", "arguments": { "dominantCount": 47, "recessiveCount": 53, "alpha": "0.05", "decimalPlaces": 4 } } }