Answer: Muscles cell contain myosin II, which is responsible for muscle contractions.
Explanation:
Myosin are motor proteins that are responsible for muscle contractions and motility processes in animals.
Myosin II is also called conventional myosin is a form of myosin found in muscles cells and are responsible for muscles contraction in animal cells. It is found in non muscles cells called stress fibers.
They would be genetic diversity, species diversity, and ecosystem diversity.
I guess the answer for this would be the DNA but i'm not sure tho, I haven't see this things since a long time.