Sentences with word «phyletic»

Punctuated equilibrium is commonly contrasted against the theory of phyletic gradualism, which states that evolution generally occurs uniformly and by the steady and gradual transformation of whole lineages (called anagenesis).

Punctuated equilibrium is usually compared and contrasted with the theory of phyletic gradualism that holds that evolution occurs uniformly and by the steady and gradual transformation of whole lineages (called anagenesis).

As the late Harvard evolutionary biologist Ernst Mayr concluded: «Nothing demonstrates the improbability of the origin of high intelligence better than the millions of phyletic lineages that failed to achieve it.»

It is nothing but a physical accident, he said, due to «a long series of phyletic modifications in the phronema of the cortex.»

The acceptance of punctuated equilibrium put to death the then prevailing thought that gradual change was the evolutionary mechanism of speciation (Darwinian phyletic gradualism, which had held sway for > 100 years, was utterly debunked)

The widely held view that the genomic and phyletic split between Pan and humans was as recent as 5 to 6 million years ago also fuels the often uncritical acceptance of a Pan-like last common ancestor.

There are those who believe in phyletic gradualism, the thought that the process of speciation takes place constantly and over long periods of time.

More precisely, the duration of phyletic or ontogenetic process is not the evolutionary (maturational) history of a species (organism); the former is more accurately the sum of its ontogenies.

Microgenesis refers to the actualization (Aktualgenese) of a cognition over «layers» in mind and brain that retrace growth patterns in phyloontogeny.1 The recapitulation that is the cornerstone of historical theory is a repetition of the antecedents of a behavior that phyletic or ontogenetic process lays down.

«Punctuated equilibria: an alternative to phyletic gradualism.

In affording us a biological, «phyletic» outlet directed upwards, the shock which threatened to destroy us will have the effect of re-orienting us, of instilling a new dynamic and finally (within certain limits) of making us one whole.

from «Punctuated equilibria: an alternative to phyletic gradualism» (1972) Paleontologists should recognize that much of their thought is conditioned by a peculiar perspective that they must bring to the study of life: they must look down from its present complexity and diversity into the past; their view must be retrospective.

With the dawning of Reflection each conscious unit isolates itself and, one would say, tends increasingly to live only for itself, as though, by the fact of hominization, the phylum were broken up into individuals; and as though, in the hominized individual, the phyletic sense were submerged until it finally vanishes.

what you are describing is known as «phyletic gradualism», it's what Darwin proposed, and it has been utterly and completely refuted by the fossil record.

And since when has phyletic gradualism been the sole basis of evolution?

Darwinian evolution is a myth» @Chad «Darwinian evolution has been completely refuted, phyletic gradualism is dead, put to death by the fossil record»

«Punctuated equilibria: an alternative to phyletic gradualism» (1972) pp 82 - 115 in «Models in paleobiology», edited by Schopf, TJM Freeman, Cooper & Co, San Francisco.

Then, in 1972 the publication of «Punctuated equilibria: an alternative to phyletic gradualism» by Stephen Gould (atheist) finally forced the scientific world to accept the reality that the fossil record does not show the gradual change over time that Darwin proposed.

The notion that purely random mutation preserved in the population by natural selection would produce a gradual change, which over time would create the complexity of life we now observe (phyletic gradualism).