Who said "Selection pressure shapes populations over time"?

This quote is attributed to Wilhelm Johannsen.

Selection pressure shapes populations over time - Wilhelm Johannsen

"Selection pressure shapes populations over time"

Wilhelm Johannsen Change

Geneticist and Botanist Danish 1857–1927

"Genetics is the science of heredity, and heredity is the fundamental principle of life."

"The gene is the unit of heredity, but it is not the unit of evolution."

"Nature does nothing suddenly, and gradualism is the law of change."

"Pure lines are the foundation of scientific breeding."

"Change brings new opportunities."

"Every day is a new opportunity."

"Healing doesn't mean forgetting."

"You either get better or you get bitter."