Kitty genovese was stabbed to death while neighbors looked on. nobody went out to and only later did someone call the police for . this event led psychologists to create a new term called

cell differentiation  is how generic embryonic  cells  become specialized  cells. this occurs  through a process called gene expression. gene expression is the specific combination of genes that are turned on or off (expressed or repressed), and this is what dictates how a  cell  functions.

explanation:

the entire statement is true and correct.  

there's no diagram, nothing is illustrated, and no question is asked.