Sentences with phrase «of simple organisms»

plasmodium A form within the life cycle of some simple organisms such as slime molds, typically consisting of a mass of naked protoplasm containing many nuclei.

Winston covers all the bases, from Lamarck «s notions on the origins of simple organisms through to the intricacies of genetics, and he also touches on speciation, shrinking biodiversity, genetic drift, even the ethics of selecting «desirable» traits in your children.

The cyber moth joins the esteemed ranks of simple organisms hitched to robots, including slime mold, a detached eel brain and the cockroach.

In such cases of the simplest organisms, they may respond sympathetically to (or feel) their nearest equal neighbors in a community - like relationship.

Not exact matches

The DNA programming required to create life capable of replicating in even the most simple single celled organism is far far more complex than anything mankind has ever built.

No there is a mountain of evidence for evolution: geographic distribution, tree of life, simpler organisms are older, inheritance, DNA, etc. and no evidence for creationism — unless you've seen a woman created from the rib of a man.

Then, as a result of genetic duplication, random selection and the environment, those simple life forms * evolved * into slightly more complex organisms.

All an evolutionary storyteller has to do is to start with the apparently simplest version, ignore the neural equipment that has to be present for an organism to make any use of a «photon receptor,» and spin a charming tale about how a tiny primitive light - sensing cell might grow up to be a full - fledged eye.

Just as a mountain climber can not jump to the top of the Matterhorn, a (relatively) simple organism like a bacterium can not even conceivably become a complex plant or animal except in very gradual stages.

The consensus on the evolution of primitive life is that simple life forms (prokaryotes, organisms whose cells lack a distinct nucleus) inhabited the Earth about 3 - 4 billion years ago, eukaryotic cells (those with a nucleus which contains the genetic material) emerging 2 - 3 billion years ago.

Recombinant DNA research has been done primarily on bacteria, one - celled organisms smaller than animal or plant cells and simpler in structure, yet capable of very complex chemical activity.

In various experiments with various conditions, scientists have been able to create a wide range of cell - like structures of increasing complexity on the road toward a simple self - replicating organism.

I don't mean taking for granted things that are totally unproven, like the fundamental process of complex organisms spontaneously emerging from simpler ones.

David Griffin, on the other hand, agrees with Leclerc that complex physical organisms are more than simple aggregates of actual entities, but maintains at the same time that such a view is altogether consistent with Whitehead's philosophy.

I'll even offer observations - humans have manipulated existing organisms dna, created new virus and bacteria, clone animals, and attempt to create new animals - yet simple minded folks still reject the idea that another more intelligent creature might have done the same thing and created life on earth in the same fashion while at the same time acknowledging that there is a strong likelihood of other life existing in this universe - talk about being dumbed down and arrogant.

@Fred Moore,»... like the fundamental process of complex organisms spontaneously emerging from simpler ones.

Genetic diversity, survival of the fittest and the propensity of organisms to produce offspring that resemble themselves are all pretty simple concepts.

We anticipate some sort of growth toward increased complexity: increasingly larger organic macromolecules, then the convergence of many macromolecules to constitute a simple living system, either as a cell with its protective wall and vital nucleus or as some functional analogue, then the convergence of many cells to form larger organisms.

Nature works at every level to produce more complex and highly organised systems and organisms from much simpler components: this is the theory proposed and investigated by this collection of essays.

In vegetables and perhaps in very simple animals no such dominant occasion occurs, but in the higher organisms, especially where a fully developed central nervous system and brain is found, there is strong indication of centralized control of many aspects of the animals behavior.

With the increase in complexity new entities emerge — the classical world out of the quantum world, molecules and chemical processes out of atomic structures, simple living organisms out of complex molecular structures.

If the material encasement be coarse and simple, as in the lower organisms, it permits only a little intelligence to permeate through it; if it is delicate and complex, it leaves more pores and exits, as it were, for the manifestations of consciousness....

The arrangement of the world's occasions into an array of aggregates, organisms, and societies ranging from the subatomic to the galactic, from the simple to the complex, has no limits.

This is just one example of the many problems that must be overcome in order to find a «natural» explanation for the evolution of complex organisms from simpler ones.

DE: This seems to me to be what his philosophy of organism should have gone for, and when he said he was trying to make this a bridge notion between the biological and physical sciences, I think the link is in his notion of the «non-uniform object» of which the simplest example is the wave.

He reminds us that science is still ignorant of the chemical pathways that wonderfully allowed the inert chemicals of the earth's early history to form the more complex chemicals needed by even the simplest living organisms.

Indeed, modern ecosystems depend on the persistence of bacteria and fungi and other relatively very simple and archaic life forms to break down dead organisms and recycle nutrients.

, simple processes of interchange among living organisms, and operations of human and nonhuman consciousness.

While some of the metamorphoses that DO occur in nature, eg caterpillar into butterfly or tadpole into frog, are as spectacular or arguably even more spectacular than your fish to frog morph, the simple fact is that evolution doesn't happen to individual organisms.

If there is no God, then naturalism is all that remains, the evolution of man from simpler organisms over billions of years.

Where to start with this one... For one those that believe Evolution and Big Bang Theory, you are really gonna believe that we once were simple one - celled or only a few celled organisms and through a series of mutations over millions of years that we are what we are today?

What all these have in common is that, without any central control, individual units (genes, cells neurons or workers) respond to simple, local information, in ways that allow the whole system (cells, brains, organisms or colonies) to function: the appropriate number of units performs each activity at the appropriate time.

In the simplest case, the colony evolved into organisms made of cells that were mediocre at both tasks.

Microbial geneticists Paul Rainey and Michael Travisano of Oxford University wanted to examine diversification in simpler organisms within the confines of the lab.

The sea sponge may seem like an odd choice for genomic research considering that its simple body lacks muscles, organs, and nerve cells, but the creature provides a wealth of information on how multicellular organism arose.

Hartman suggested in 1984 that the nucleus arose when a hypothetical cell that stored its genetic information as RNA instead of DNA and possessed a simple cytoskeleton became the host for an archaeal organism.

New research presented at the European Planetary Science Congress at UCL aims to answer the final question, of whether entry and impact is survivable for simple organisms.

That might not sound like much but populations of many simple organisms can number in the trillions, with new generations appearing every hour or less.

The complexity of mammals led Kandel to try to find a simpler organism to use in his studies.

Scientists knew that fruit flies, cockroaches, and other simple organisms have sensory processors that resemble a cortex, but these were «always interpreted as a striking example of convergent evolution of unrelated structures,» says molecular biologist Raju Tomer, who led the study at the European Molecular Biology Laboratory in Germany.

Using the freshwater polyp Hydra as a model organism, the Kiel - based researchers and their international colleagues investigated how the simple nervous system of these animals interacts with the microbiome.

To explain how his hypothetical code - script might work — it had to be extremely complicated because it involved «all the future development of the organism» — Schrödinger resorted to some simple mathematics to show how the variety of different molecules found in an organism could be encoded.

The group has built a simple electronic circuit that is capable of the same «intelligent» behaviour as Physarum, a unicellular organism — and say this could help us understand the origins of primitive intelligence.

To trace the molecular basis of memory, Kandel was using the sea slug Aplysia, a neurologically simple organism that contains only perhaps 20,000 neurons, many of them quite large.

From analysis of protein and DNA sequences in a large number of modern organisms, Trifonov and his colleagues Alexander Berman and Eugene Kolker have discovered what they think is a legacy of this simple form of genetic material.

Simpler kinds of living organisms came first, and it took hundreds of millions of years of evolution on Earth to progress from single - celled life forms to complex organisms like ourselves.

Most are microscopic and unicellular, with a relatively simple cell structure lacking a cell nucleus, and organelles such as mitochondria and chloroplasts.Bacteria are the most abundant of all organisms.

Collins said that because Hydra is such a simple animal and because it is able to regenerate after complete dissociation into individual cells, it offers researchers the opportunity to use similar techniques as the ones employed in their experiments to examine how an organism develops from an unstructured group of cells into a complex body plan.

A simple organism with only a sliver of RNA couldn't possibly build such a complicated container for itself.

Though little is known about Loki, scientists hope that it will help to resolve one of biology's biggest mysteries: how life transformed from simple single - celled organisms to the menagerie of complex life known as eukaryotes — a category that includes everything from yeast to azaleas to elephants.