We can use gene duplication and loss to determine if our proteins are related or not. If there are two genes in a cluster but one of them is missing, it means that they recently diverged from each other. If both genes are still present, then they have been evolving together for a longer period of time.
What is the purpose of gene duplication?
The primary function of gene duplication is to create more copies for mutation. If one copy mutates and becomes non-functional, there will be another copy that can take over its function.
What is the purpose of …