Answer:
An operating system is a software that helps the any computers basic needs or functions. For example, the windows on a computer is a operating system.
Explanation:
Impasto. Hope this helps!
<span><span>STR stands for Short Term repeat. It is </span>a region of a DNA molecule that contains short segments of three to seven repeating base pairs</span>
<span>Hundreds of different types of STR's are found in the human genomes.</span>
Alexander Hamilton, George Washington, James Madison, and Benjamin Franklin