Is Singing in genetics?

Whether a great voice is actually genetic, or at least partially the product of environment, doesn't matter to anyone old enough to ask this question. The more important part of the answer is that singing can be learned, as an adult, and a person can become a thoroughly passable singer at almost any time of life. read more

The genetic component of singing has to do with the size, length, and thickness of the vocal folds, which affects timbre and agility, range, among other things, and resonant spaces in your head, the size of the bones, the shape of your vocal tract, the length of your tongue, etc. Everything that comprises your vocal instrument, except for training and technique - how you have learned to use your voice. read more

Let's clarify your question as "Genetics or practice". Practice will take you into the realm of professional singing. It's not enough to get you big solos, but it is enough to get singers into professional choirs and the like. read more

Though, 'genetics' does have some impact, such as personal singing styles, it does not influence how well one can sing. Also, something else to take into consideration is, some people are soloist, while others can blow by singing in a group or choir. read more