Sentences with phrase «of species concepts»

There are a whole lot of species concepts, says Richard Richards, a philosopher of biology at the University of Alabama in Tuscaloosa.

As specialists argue over the fine details of species concepts, I'm struck by how often the word «fuzzy» comes up.

In the cacophony of species concepts, de Queiroz sees some commonality.

Extremely squeezed - down summaries of just a few of the dozens of species concepts give a rough sense of the differing approaches researchers use to define a species.

Thinking about the seemingly intractable ambiguities of the species concepts got a lot easier for me after my visit with de Queiroz.

Not exact matches

Some argue that even the most advanced human concepts are built up from basic building blocks that are shared across species, such as notions of past and future; similarity and difference; and agent and object.

This concept is based on the suggestion that those members of a species that are a little stronger, a little larger, or run a little faster will live longer to procreate offspring with these superior adaptations.

But presuming — as I do — the validity of the concept of geologic time, I note that the designation «Anthropocene» unavoidably suggests an exceptional quality to the species homo sapiens, if only in terms of our collective human powers.

To put it simply, the concept of gods bares no merit at this current stage in the evolution of the human species and it would be a betterment to the species to have the concept removed from accepted delusional realities so prevalent in todays society.

Applying this concept allows us to utilize mathematical concepts to determine the number of species that have lived on the earth over its history.

Genetic science proves that wrong and that while the first humans may have evolved from one subhuman species, all subsequent humans, from every race, were descendant from those first humans — thus confirming the very biblical concept of all humans having a common ancestor.

The changes are extremely gradual, they can not be observed over the short time span of human civilization so far, and the term «species» is a man - made concept to make categorization of life forms convenient... it is not an immutable feature of the natural world as you seem to think it is.

Genetic science proves that wrong and that while the first humans may have evolved from one subhuman species, all subsequent humans, from every race, were descendant from those first humans - thus confirming the very biblical concept of all humans having a common ancestor.

Seeing that a state of total socialization awaits the human species, they ask, can we fail to recognize the eastern concept of Karma in this monstrous form?

In the theory we are offering, since knowledge is by intuition and perception, not by abstraction of only part of the singular real, this ultimate universalism of the nature as sort or species, is said to be a singular real and also a concept defined within a distinct limit of formal variability, both as real, and also as concept.

Ethics and morality are necessary for a species to form a civilization, and we see rudimentary understanding of these concepts in other species — just not as refined.

Perhaps Lifton and Markusen mean something similar by their rather daffy concept of «species self.»

Doc, I'm not sure what science you are referring that says some species are * more evolved * than others, but based on the concept that every species that currently exists, including their ancestors, has undergone the same amount of natural selection and other pressures over the past 3 + billion years, they have all evolved to the same extent, i.e. their current form.

The human species currently consists of some six billion individuals spread around the globe in millions of groups large and small, all focused on their own affairs without much concept of any ultimate goal, or the value of their contribution.

What women today are figuring out and returning to is the concept that being pregnant and having babies is a normal function for the female species, and as long as there are no extenuating circumstances, it doesn't require the intervention of men, machinery and medicine.

According to Jean Liedloff, the continuum concept is the idea that in order to achieve optimal physical, mental and emotional development, human beings — especially babies — require the kind of experience to which our species adapted during the long process of our evolution.

Resurrecting long - dead species, bioengineering friendlier animals, and creating robot creatures made of artificial tissue: These are some of the concepts proposed by prominent zoo directors, animal behaviorists, conservationists, and architects at a first - ever symposium about the future of zoos, held in Buffalo, New York, this winter.

«These data are fully in accord with recent work on the actions of reactive oxygen species in cells, although clearly at odds with the popular concept that dietary antioxidants are inevitably beneficial,» says Malcolm Jackson at the University of Liverpool, UK, who was not involved in the research.

A more general problem, according to critics of the biological species concept, is that it does not really help scientists figure out where one species ends and another begins.

The concept of species is among the most familiar scientific ideas in our lives.

Influenced by his work with fossils, George Gaylord Simpson, one of the great paleontologists of the 20th century, proposed his «evolutionary species» concept in 1951.

Strict followers of the biological species concept might also have to classify some dog breeds as separate species, Hey suggests, because a Chihuahua can not jump high enough to make puppies with a mastiff.

It has been 150 years since Charles Darwin proposed his theory of evolution in On the Origin of Species, yet in some ways the concept of evolution seems more controversial than ever today.

But the neat concept of adaptation to the environment driven by natural selection, as envisaged by Darwin in On the Origin of Species and now a central feature of the theory of evolution, is too simplistic.

«It offers the first proof of concept that it's possible to incorporate human cells efficiently into another species,» Wu says.

So far Reed has established a proof of concept in Drosophila fruit flies, a commonly used model species in laboratories across the world.

in the May issue claims that biologists say the concept of race is biologically meaningless, presumably because «any large human population has about 85 percent as much genetic variation as the species as a whole.»

Before he suggested that species could change over time in the early 19th century, no one took the concept of evolution seriously.

This suggested not only that species could change — already a divisive concept back then — but also that the changes were driven purely by environmental factors, instead of divine intervention.

2) This study provides additional support for the concept of horizontal miRNA transfer across species and kingdoms.

«Biodiversity» is a concept that refers to the variety of different life forms, from the genetic level to the species level.

The blends of sex and no - sex don't fit into a tidy biological species concept.

The biological species concept has drawbacks, to put it gently, for coping with much of the variety and oddness of life.

He adds that the concept seeks to balance relationships both among different species and among subpopulations of a given species such as age groups, gender groups or regional schools.

These collections anchor our concepts of everything in biology and are our only repositories for some dying or possibly already - extinct species.

«This concept still supports avoiding bycatch of vulnerable or protected species,» Zhou says.

«The species concept is difficult for microbes,» said O'Dwyer, an assistant professor of plant biology and member of the Carl R. Woese Institute for Genomic Biology at the University of Illinois.

This article appears in the November 11, 2017 issue of Science News with the headline, «The fuzzy art of defining species: A vital concept sparks many arguments.»

Understanding which traits predispose background species to protection under an umbrella strategy will be important to the overall success of conservation based on the umbrella species concept, Chalfoun says.

He should know, having cataloged 32 of them in his 2016 overview, Species Concepts in Biology.

Using their concept, all fish — regardless of species, size or gender — would be fished in proportion to their abundance and replenishment rate, thereby better preserving the makeup of the ecosystem.

The finding, reported online today in Current Biology, comes from CT scans of several more - complete skulls of the species (artist's concept, above) also unearthed on Kenya's Rusinga Island, a near - shore landmass in the northeastern corner of Africa's Lake Victoria.

The Keystone Species Concept The keystone species concept lies at the heart of the HSS Species Concept The keystone species concept lies at the heart of the HSS species concept lies at the heart of the HSS debate.

The keystone concept has been applied to a variety of species, from large carnivores to herbivores and even plants.

The results — from studies of crows, butterflies, mosquitoes, fish and other organisms — suggest that the concept of species is even more muddled than we thought, and that genetic changes don't always align with more visible ones, such as appearance.