PEDIGREE

Angus Curly Calf Syndrome pedigree — autosomal recessive

This Angus pedigree chart shows Curly Calf Syndrome, also known as arthrogryposis multiplex, as an autosomal recessive condition. Two carrier parents in generation I have an affected male calf, the proband. That affected animal is later paired with a confirmed carrier female, producing one affected and one carrier offspring in the illustrative next generation.

UPDATED 2026-09-23

TYPEPedigree

USE-CASEAnimal Breeding

EXAMPLEAngus Curly Calf Syndrome pedigree — autosomal recessive

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CASE ANALYSIS

Scenario

An Angus breeder is tracing Curly Calf Syndrome, also called arthrogryposis multiplex, as an autosomal recessive condition before selecting matings.

Key decisions

Both generation-I parents are carriers, making their affected son genetically possible.
The generation-II proband is affected and therefore carries two disease alleles.
The proband is mated to a carrier female, allowing an affected generation-III calf.
The unaffected sibling is not labeled a carrier because carrier status is not established by phenotype alone.

When to reuse this

Use this educational pedigree to explain recessive inheritance and why verified DNA testing matters. Actual breeding decisions should use laboratory results and breed-association guidance.

FAQ

Frequently asked questions

Is Curly Calf Syndrome recessive?01

Yes. Arthrogryposis multiplex, commonly called Curly Calf Syndrome in Angus, is inherited as an autosomal recessive condition.

Why are both generation-I parents carriers?02

An affected offspring must receive a disease allele from each parent, so two phenotypically normal parents must both be carriers in this example.

Can an unaffected animal still be a carrier?03

Yes. A carrier has one disease allele and may be clinically unaffected, so DNA testing is needed to establish status.

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