phyletic การใช้

• Gradualism is often confused with the concept of phyletic gradualism.
• The fossil record includes well documented examples of phyletic gradualism and punctuational evolution.
• The remainder of the book, about 300 pages, is an " Annotated Phyletic Catalog " of specimens collected.
• Both punctuated equilibrium and phyletic gradualism are not mutually incompatible, and examples of each have been documented in different lineages.
• "' Phyletic gradualism "'is a model of evolution which theorizes that most speciation is slow, uniform and gradual.
• More studies on presocial taxa would allow for phyletic analyses to recover the actual path of evolution that different mechanisms of social immunity took.
• Punctuated gradualism is considered to be a variation of these models, lying somewhere in between the phyletic gradualism model and the punctuated equilibrium model.
• However, this was not widely accepted, and was rejected by other authors on the grounds of both nomenclatural and " phyletic unsoundness ".
• The wide phyletic separation of B . sphaerocarpa " prompted Thiele to promote it to species rank as " B . dolichostyla ".
• August Eichler ( 1886 ) was the first phyletic taxonomist and positioned the Amaryllidaceae and Liliaceae within the Liliiflorae, one of the seven orders of monocotyledons.
• The theory was contrasted against phyletic gradualism, the popular idea that evolutionary change is marked by a pattern of smooth and continuous change in the fossil record.
• This approach, also referred to as polythetic was superseded by ones based on an understanding of the acquisition of characteristics through evolution, referred to as phyletic.
• Pseudoextinction is an event that occurs much more frequently under the assumption of a Phyletic gradualism model of evolution, under which speciation is slow, uniform and gradual.
• Punctuated equilibrium is commonly contrasted against phyletic gradualism, the idea that evolution generally occurs uniformly and by the steady and gradual transformation of whole lineages ( called anagenesis ).
• Some critics jokingly referred to the theory of punctuated equilibrium as " evolution by jerks ", which prompted Gould to describe phyletic gradualism as " evolution by creeps ."
• Despite the phyletic order of the above, Nelson thought the closest relatives of " A . terminalis " were probably " A . dobagii ".
• This is further complicated by whether you think Punctuated equilibrium or Phyletic gradualism or Punctuated gradualism or something else is the best model for the evolution of whatever you're referring to.
• The term " phylogeny " derives from the German " Phylogenie ", introduced by Haeckel in 1866, and the Darwinian approach to classification became known as the " phyletic " approach.
• The biologist Orator F . Cook coined the term'speciation'in 1906 for the splitting of lineages or " cladogenesis, " as opposed to " anagenesis " or " phyletic evolution " within lineages.