Unlock Genetics

Discover inheritance patterns

Your family’s story

Your doctor or genetic counsellor will spend some time asking about other people in your family to try to work out the way in which your particular faulty gene has been passed down through the generations – this is referred to as the inheritance pattern. Your symptoms and family history will give some indication of whether it takes only one faulty copy of a gene to cause your sight loss, or whether both copies have to be faulty. This in turn dictates the chances of your children inheriting the condition.

Understanding your family’s inheritance pattern is not the same as having a genetic diagnosis, although it is not always possible to confirm the inheritance pattern in a family without a genetic test.

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