Spelling Out the Causes of Dyslexia -- Vogel 2005 (222): 1 -- sciencenow:
Now, researchers believe that they are one step closer to fingering a possible culprit. Natalie Cope and Julie Williams of Cardiff University in the United Kingdom and their colleagues studied 223 people with dyslexia, as well as their families and 273 controls. The team reports in the current issue of the American Journal of Human Genetics that those with dyslexia had a strong tendency to carry alterations in KIAA0319, a gene on chromosome 6p.
This is an evolutionary hypothesis about the relationships of the 273 people and their common descent. The same methods are used to compare mice and flies.