A set of organisms that resemble one another in appearance and behaviour is called a _____________

The correct answer is C. Species.

A species is a group of organisms that can interbreed and produce fertile offspring. They share a common ancestor and are similar in appearance and behavior.

Exons are parts of genes that are transcribed into RNA. They are responsible for coding for proteins.

Prions are misfolded proteins that can cause other proteins to misfold, leading to disease.

Guilds are groups of organisms that share a common resource, such as food or habitat.