Kangaroos and wallabies are an example of parallel evolution.

Convergent evolution refers to the phenomenon where different organisms develop similar features to adapt to the same environment.

Graph theory is a branch of mathematics that studies mathematical structures called graphs.

Theoretically, this experiment should succeed.

Information theory is a field of study that mathematically analyzes the amount of information and the efficiency of its transmission.

He is known as an excellent theoretician.

He is immersed in the study of string theory.

He is particularly interested in game theory within economics.

He is writing a paper on coding theory.

String theory is a branch of physics that is a theory for understanding the basic structure of the universe.