Today, scientists can sequence the DNA of nearly any organism they wish. Yet they cannot predict the size, shape, or functions of a developing organism solely based on its DNA sequence.
There are many components involved in the development of an embryo. All of these parts come together to make a very complicated system that controls the expression of genes—when, where, and how genes are turned on and off. Biologists have identified the molecules needed for developmental pathways to operate, but to Professor Hernan Garcia in the physics department at UC Berkeley, we will only be able to fully understand development when we can rewrite its instruction manual and control it.