She is a staunch Darwinist and believes in the theory of evolution.

The theory of evolution is based on Darwinistic principles.

Many Darwinists believe in the theory of evolution.

She approached the problem Darwinistically, considering only the most advantageous solutions.

Ultra-darwinists believe in the principles of natural selection and evolution.

Ultra-Darwinists believe in the principles of natural selection and evolution.

He is an ultra-Darwinist who believes in the theory of natural selection.

He is an ultra-Darwinist who believes in the principles of natural selection and survival of the fittest.