Complementation test in biology

Before we dive into the intricacies of complementation tests, let's take a moment to appreciate the sheer complexity of the genetic world. Every living organism, from the tiniest microbe to the mightiest mammal, carries within it a blueprint of life – the DNA. This intricate molecule, with its four-letter code, holds the key to our very existence. But how do we decipher this code? How do we understand the myriad interactions that occur within it? That's where complementation tests come in.