There is no permanent status quo in nature; all is the process of adjustment and readjustment, or else eventual failure. But man is the first being y….

Natural selection based on the differential multiplication of variant types cannot exist before there is material capable of replicating itself and i….

The gene as the basis of life..

To say that a man is made up of certain chemical elements is a satisfactory description only for those who intend to use him as a fertilizer..

As science is more and more subject to grave misuse as well as to use for human benefit it has also become the scientist's responsibility to become a….

The central problem of biological evolution is the nature of mutation, but hitherto the occurrence of this has been wholly refractory and impossible ….