Border Collie Collie Eye Anomaly pedigree — autosomal recessive
This Border Collie pedigree chart illustrates Collie Eye Anomaly as an autosomal recessive condition. Two carrier parents produce an affected female proband. The proband later mates with a carrier male, which makes both an affected and a carrier puppy possible in generation III. Each affected dog in the example has two parents capable of passing on the disease allele.
Open it in the AI editor with a prompt pre-filled — keep what works, change what doesn't.
Scenario
A Border Collie breeder is reviewing a family affected by Collie Eye Anomaly, an autosomal recessive developmental eye condition.
Key decisions
- The two generation-I parents are carriers, allowing an affected daughter.
- The female proband is affected and therefore has two disease alleles.
- Her carrier mate provides the second disease allele needed for the affected puppy.
- The unaffected generation-II sibling remains genetically unclassified.
When to reuse this
Use this case to explain a recessive dog-breeding pedigree alongside DNA testing and veterinary ophthalmic assessment. It is not a substitute for clinical or breeding advice.
Frequently asked questions
Is Collie Eye Anomaly recessive?
Why can the affected proband have an affected puppy?
Does an unaffected dog have clear status?
Try the diagram makers.
Tweak it with chat, export PNG/SVG, or fork it for your own use case.