jan 1, 1983 - Huntington's disease is the first mapped genetic disease.
Description:
The location of the HD gene (its mutation causes Huntington's disease) was mapped to chromosome 4 using DNA polymorphisms. The location of the gene was identified by James Gusella and his team at Massachusetts General Hospital, USA. *I do not know the exact month or date of this event. Only the year.*Added to timeline:
Date:
jan 1, 1983
Now
~ 42 years ago