22q11.2 deletion syndrome is caused by the deletion of a small section of chromosome 22. It results in a cleft palate, heart defects, autoimmune disorders, and more. The symptoms vary wildly and can be accompanied by learning disabilities and mental illness. Cystic fibrosis is caused by a point deletion.
The melody of Happy Birthday to You comes from the song  Good Morning to All , which has been attributed to American siblings Patty Hill and Mildred J. Hill in 1893, although the claim that the sisters composed the tune is disputed.
Christine Mai-DucContact Reporter. None of the companies that have collected royalties on the Happy Birthday song for the past 80 years held a valid copyright claim to one of the most popular songs in history, a federal judge in Los Angeles ruled on Tuesday.