Ordinary speciation remains fully adequate to explain the causes and phenomenology of punctuation. — Stephen Jay Gould Copy Share Image
The process of speciation is completed with the cessation of genetic exchange. — Peter R. Grant Copy Share Image
“New mutations don't create new species; they create offspring that are impaired.” — Lynn Margulis Copy Share Image
In Earth, among millions of lineages or organisms and perhaps 50 billion speciation events, only one led to high intelligence ; this… — Ernst Mayr Copy Share Image
anyone who writes about "Darwin's theory of evolutionin the singular, without segregating the theories of gradual evolution, common descent, speciation, and the… — Ernst Mayr Copy Share Image
“Erik Erikson coined the term “pseudo-speciation” to describe our xenophobic instinct. It is as if we rejected out of hand the unity… — Oliver Benjamin Copy Share Image
“Regardless of one's point of view, it's quite easy to see that Darwinism is not in the same league as the hard… — William A. Dembski Copy Share Image
The issue, as correctly emphasized by Carl Sagan, is the probability of the evolution of high intelligence and an electronic civilization on… — Ernst Mayr Copy Share Image
Cultural speciation had been crippling to human moral and spiritual growth. It had hindered freedom of thought, limited our thinking, imprisoned us… — Jane Goodall Copy Share Image
If evolution almost always occurs by rapid speciation in small, peripheral isolates, then what should the fossil record look like? We are… — Stephen Jay Gould Copy Share Image
The biggest bursts of speciation that we know about in the history of the earth are soon after great cataclysms, like the… — Rupert Sheldrake Copy Share Image
Although random mutations influenced the course of evolution, their influence was mainly by loss, alteration, and refinement... Never, however, did that one… — Lynn Margulis Copy Share Image
“Natural selection eliminates and maybe maintains, but it doesn't create... Neo-Darwinists say that new species emerge when mutations occur and modify an… — Lynn Margulis Copy Share Image
The history of life is more adequately represented by a picture of 'punctuated equilibria' than by the notion of phyletic gradualism. The… — Stephen Jay Gould Copy Share Image
Speciation does not necessarily promote evolutionary change; rather, speciation 'gathers in' and guards evolutionary change by locking and stabilization for sufficient geological… — Stephen Jay Gould Copy Share Image
Evolution is the fundamental idea in all of life science, in all of biology. The key to our being here now is… — Bill Nye Copy Share Image
The theory of punctuated equilibrium, proposed by Niles Eldredge and myself, is not, as so often misunderstood, a radical claim for truly… — Stephen Jay Gould Copy Share Image
![“Natural selection eliminates and maybe maintains, but it doesn't create... Neo-Darwinists say that new species emerge when mutations occur and modify an organism. I was taught over and over again that the accumulation of random mutations led to evolutionary change [which] led to new species. I…” quote by Lynn Margulis](https://sms4smile.com/q/img-quotes/5b9/lynn-margulis-17073_biology_natural-selection-eliminates-and-maybe-m_397958.png)
