Answer: Interventional Study
Explanation: When a treatment group is compared to standard (control) group it is called Interventional Study
One advantage would be fertility
Lightweight beaks, heavy teeth, stability in flight
During the cell cycle, the centrioles are made during interphase. The centrioles move to opposite sides of the cell and spindle fibers form a bridge between them during prophase, which is one stage out of the four stages in mitosis.