: gel electrophoresis :

:  gel electrophoresis  : " is a technique used to separate DNA fragments (or other macromolecules, such as RNA and proteins) based on their size and charge. Electrophoresis involves running a current through a gel containing the molecules of interest. Based on their size and charge, the molecules will travel through the gel in different directions or at different speeds, allowing them to be separated from one another"... -- Khan Academy.

For me, the gel electrophoresis technique creates visual patterns that resonate as family bonds.