The muscular system and the skeletal system are two different organs. But they're often reffered to jointly as the muscoloskeletal system. Why do you think the word musculoskeletal exists? What similarities in functions do you think the muscular system and skeletal system have?

Both helps in the movement of our body.

Explanation:

The muscular system and skeletal system perform similar function which is movement of body and muscles. Muscular system is made up of skeletal, smooth and cardiac muscles, due to these muscles we are able to work by using our muscles while on the other hand, skeletal system is made up of bones which provides structure to our body and responsible for movement of our body.

3rd option is correct

Explanation:

not all genes. are essential for an organism's. survival