He gave up dancing in 1938 to study sitar playing under court musician Allauddin Khan. After finishing his studies in 1944, Shankar worked as a composer, creating the music for the Apu Trilogy by Satyajit Ray, and was music director of All India Radio, New Delhi, from 1949 to 1956.han was a rigorous teacher and Shankar had training on sitar and surbahar, learned ragas and the musical styles dhrupad, dhamar, and khyal, and was taught the techniques of the instruments rudra veena, rubab, and sursingar. He often studied with Khan's children Ali Akbar Khan and Annapurna Devi.
In most individuals with Trisomy 13 Syndrome, duplication of chromosome 13 is caused by spontaneous (de novo) errors during the division of reproductive cells in one of the parents (e.g., nondisjunction during meiosis).
As the egg and sperm combine, this mistake is passed on to the baby. A trisomy means that the baby has an extra chromosome in some or all of the body's cells. In the case of trisomy 18, the baby has three copies of chromosome 18. This causes many of the baby's organs to develop in an abnormal way.There are three types of trisomy 18: 1  Full trisomy 18. Partial trisomy 18. 2  The child has only part of an extra chromosome 18. 3  That extra part may be attached to another chromosome in the egg or sperm (called a translocation). 4  This type of trisomy 18 is very rare.