Biology Quote by Carl Sagan

“In less than ten thousand years, domestication has increased the weight of wool grown by sheep from less than one kilogram of rough hairs…

— Carl Sagan

Artificial selection turned the wolf into the shepherd, and the wild grasses into wheat and corn. In fact, almost every plant and animal that…

— Neil deGrasse Tyson

Natural selection is not the only process that changes organisms over time. But is the only process that seemingly designs organisms over time.

— Steven Pinker

“Natural selection is a blind and undirected consequence of the interaction between variation and the environment. Natural selection exists only in the continuous present…

— Henry Gee

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

Natural selection is just three factors - over-production, variation, and inheritance combined to produce adaptation to changing local environments. It's not a principle or…

— Stephen Jay Gould

“Natural selection has destroyed the proof for the miraculous specific intervention of the Creator. But it has left us with the marvel of the…

— Karl Popper

The real problem with natural selection is that it makes no intuitive sense. It is like quantum physics; we may intellectually grasp it, but…

— Paul Bloom

“Natural selection has served as a kind of intellectual sieve, producing brains and intelligences increasingly competent to deal with the laws of nature.”

— Carl Sagan

The theory of natural selection is the centerpiece of The Origin of Species and of evolutionary theory. It is this theory that accounts for…

— Douglas J. Futuyma

“What is natural selection? Do organisms develop due to an environment, or does the environment only trigger the potential to evolve in almost endless…

— Dejan Stojanovic

“All living species “adapt.” Indeed, “adaptation” is a distinctive emergent property of life in general. Adaptation means that, over time, the average features of…

— Steven J. Dick