Chest pain refers to pain felt anywhere in the chest area from the level of your shoulders to the bottom of your ribs. It is a common symptom. There are many causes of chest pain. This leaflet only deals with the most common.
Answered by The WikiAnswersÂ® Community. Making the world better, one answer at a time. The Genes determine the nature of the cell's work....Each gene is a blueprint that directs the production. The Genes determine the nature of the cell's work....Each gene is a blueprint that directs the production.
Despite decades of hard work, cell biologists still don't fully understand how developing cells turn into all the different types in your body. But they do know that this process, called differentiation, is governed by genes. Your body tunes the genes of each cell type differently.