Which of the following plays a crucial role in coordinating cell behavior and ensuring that cells differentiate into the correct cell types at the correct times during development?

In an embryo, the cells have the genetic information passed on from the parents. Which of the following plays an important role in determining gene expression during the development of the embryo?

_____ occurs when the genes are activated or inactivated. _____, on the other hand, starts when the cell synthesizes the tissue-specific proteins from the activated genes.

What is the role of transcription factors in cell differentiation?