Chapter 18.4, Problem 4CC

Summary Introduction

To explain: How the cells are able to synthesize different molecules, in terms of cytoplasmic determinants and gene regulation.

Concept introduction:

During embryonic development, the zygote is differentiated to form mature cells with a specific structure and function. The process is known as cell differentiation. As the embryo enlarges and the cell number increases, the cells communicate with each other in the embryo. Certain cytoplasmic determinants and signals from other nearby embryonic cells regulate the specific gene expression. Signal molecules regulate gene expression by the activation and deactivation of specific genes of other cells in a process known as induction. These processes together determine the fate of embryonic cells.