How can a blastocyst,which is basically a mass of cells,develop into different tissues,organs,systems,and ultimately a fetus?

Question

Quizplus · Accepted Answer

Chemical signals play a critical role in the development of different tissues and organs from a blastocyst. These signals regulate genes and proteins that determine the type of cell that each cell will differentiate into. This process is called cellular differentiation, and it is the key to the formation of all organs and tissues in the human body. Choice A is incorrect because chemicals alone cannot cause cells to become different tissues. Choice B is incorrect because chemical signals do not directly cause the production of genes. Choice D is incorrect because proteins are regulated by genes rather than the other way around. Choice E is incorrect because all cells do not develop into one type of organ but differentiate into various types of cells that form different organs and tissues throughout the body.

How Can a Blastocyst,which Is Basically a Mass of Cells,develop