Is human voice from the genes?

Voice is indeed genetic gene expression come out of, but no one voice was born beauty, each singer voice will be trained, through professional teacher guidance. But not a school or an institution specialized training presentation skill. After my years of study found that in the process of speech by the audience, the most important is communication technique, accounting for 70%, and the influence of the text is only 30%. Only text reading or speech, it is difficult to reflect affinity, appeal and influence. No skills of speaking is pale. In fact, without training, no one really can speak.