Which fiber has a ribbon-like shape with twists at irregular intervals?

The fiber that has a ribbon-like shape with twists at irregular intervals is cotton. Cotton fibers are known for their natural twist and flat, ribbon-like appearance, which can create a textured surface. This structure allows cotton to have excellent absorbency and breathability, making it a popular choice for fabrics used in clothing and home textiles. The irregular twists in cotton fibers contribute to its unique feel and help in the spinning process, providing strength and flexibility to the resulting yarn.

Understanding the characteristics of different fibers is essential, particularly in forensics, where the physical properties can aid in fiber comparison and identification. Each type of fiber has distinct structural traits that influence how they look, feel, and behave, both in textile applications and in forensic investigations.