Retaining some features of a musical idea while changing others is called

In picassos masterpeice bulls head which bicycle part makes up the bulls horn

How do these cultures use the element of shape in very similar ways

Why did bramante’s plans for the st. peter’s basilica never come to fruition? a. he and the pope could not agree on the plans. b. the pope changed his mind several times. c. the pope died and political unrest followed. d. bramante died before he could act on the plans.