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.
Oh Happy Day by The Edwin Hawkins Singers Songfacts. 1  Oh happy day (oh happy day) 2  More songs from The Edwin Hawkins Singers. 3  More songs with a gospel influence.  More songs about joy and 1  happiness. More songs sung at church.  More songs featuring 1  choirs. More songs that won Grammys.  More call-and-response songs.