Would a skeletal muscle fiber still have striations if it lacked thin filaments? Explain.

The answer is NO.

Explanation:

The striations that are caused in the skeletal muscle fibers exist due to the overlapping of the thick filaments with the thin filaments. Hence, if thins filaments would not be present in the myofibrils of a skeletal muscle fiber, then striations would not be caused.

The same goes for thick filaments. If there would be no thick filaments in the myofibrils of the skeletal muscle fiber, then no striations will be caused.