AP BIOLOGY

Detailed explanation-1: -The body and cells in the proximity decide the factors found in cells right from the fetal developmental stage to death. Both the DNA constituted in a cell and the location of expression of DNA is pivotal.

Detailed explanation-2: -What Causes Cell Differentiation? Cell differentiation is caused by changes in gene expression. This occurs when different signaling molecules in the environment activate or repress different transcription factors that are necessary to express certain genes in the DNA.

Detailed explanation-3: -Thus the position (location) of a cell in the early embryo largely determines what cell type it will become in the end of the process of the embryonic development. The process of altering the pattern of gene expression and thus becoming a cell of a particular type is called cell differentiation.

Detailed explanation-4: -Lineage specific markers on the cell membrane (“surface receptors”) and in the cytoplasm (“intracellular proteins”) can be used to identify differentiated cells. Cell surface receptors are specialized proteins that can selectively bind or adhere to signaling molecules.

Detailed explanation-5: -Roles of DNA and RNA in Cell Differentiation Dexoyribonucleic Acid, or DNA, controls the way cells function. It also determines what type of specialized cells will be made. Stem cells are cells that have the ability to become any type of specialized cell in the body.