Brian Charlesworth Quotes & Sayings
Enjoy the top 1 famous quotes, sayings and quotations by Brian Charlesworth.
Famous Quotes By Brian Charlesworth
The combined effects of mutation, natural selection and the random process of genetic drift cause changes in the composition of a population. Over a sufficiently long period of time, these cumulative effects alter the population's genetic make-up, and can thus greatly change the species' characteristics from those of its ancestors. — Brian Charlesworth