Question

Because DNA strands are so tiny, how do scientists sort and measure them?

Question 1 options:

They sort them by hand


They use a microscope and probes


They use gel electrophoresis


They use a centrifuge

Answer 1

Scientists typically use **gel electrophoresis** to sort and measure DNA strands. This technique allows researchers to separate DNA fragments based on their size by applying an electric field to a gel matrix, causing the DNA to move and creating a distinct pattern that can be analyzed.