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CEA Carrier-to-Carrier Breeding: The Mathematics Breeders Need to Understand

A step-by-step explanation of the genetic math behind CEA carrier-to-carrier breedings. Expected genotype ratios, litter-size probability distributions, and why one affected puppy in a litter does not doom a breeding program.

April 23, 2026

Collie Eye Anomaly

Evidence-based veterinary ophthalmology for herding breed enthusiasts and breeders.

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Scottish Veterinary Eye Clinic
42 Clerk Street
Edinburgh EH8 9HX
Scotland, United Kingdom

© 2026 Dr. Amanda Chen. All rights reserved.

The information on this site is for educational purposes only and is not intended to replace professional veterinary examination. Always consult a qualified veterinary ophthalmologist for diagnosis and treatment.