Question

Differential gene expression and apoptosis are key processes indevelopment because they _____.

	have provided theories as to how cellsspecialize and proliferate
	have provided hypotheses on mechanisms inwhich gene activation controls cell death and apoptosis promotescell division
	provide a plausible explanation as to howcontrolled DNA replication controls cell death in a regulatedfashion
	offer an explanation as to howtranscription controls development and how loss of specific cellscan facilitate formation of mature organs