Question

What is a dark band?

• A. Region where actin is present
• B. Region where myosin is present
• C. Region where both actin and myosin are present
• D. Region where both actin and myosin are absent

Answer 1

The correct option is C

Region where both actin and myosin are present

There are two types of myofilaments. Thin actin filament and thick myosin filament. Both the filaments are arranged alternately. The region where both myofilaments are present is seen as dark and is called as dark band.