Natural selection based on the differential multiplication of variant types cannot exist before there is material capable of replicating itself and its own variations, that is, before the origination of specifically genetic material or gene-material. — Hermann Joseph Muller Copy Share Image
There is no permanent status quo in nature; all is the process of adjustment and readjustment, or else eventual failure. But man is the… — Hermann Joseph Muller Copy Share Image
To say that a man is made up of certain chemical elements is a satisfactory description only for those who intend to use him… — Hermann Joseph Muller Copy Share Image
The central problem of biological evolution is the nature of mutation, but hitherto the occurrence of this has been wholly refractory and impossible to… — Hermann Joseph Muller Copy Share Image
Natural selection based on the differential multiplication of variant types cannot exist before there is material capable of replicating itself and its own variations,… — Hermann Joseph Muller Copy Share Image
