The central problem of biological evolution is the nature of mutation, but hitherto the occurrence of this has been wholly refractory and impossible to influence by artificial means, although a control of it might obviously place the process of evolution in our hands.

-Hermann Joseph Muller

Select a background
Awesome background image
Awesome background image
Awesome background image
Awesome background image
Awesome background image
Awesome background image
Awesome background image
Awesome background image
Awesome background image
Awesome background image
Awesome background image
Awesome background image
Awesome background image
Awesome background image
Awesome background image
Awesome background image
Awesome background image
Awesome background image
Awesome background image
Awesome background image
Awesome background image
Awesome background image
Awesome background image
Awesome background image
Awesome background image
Awesome background image
Awesome background image
Awesome background image
Awesome background image

More quotes by Hermann Joseph Muller