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Evolution

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Chemtrail Central > Ecology

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Tally27





Joined: 11 Jul 2007
Posts: 218
Evolution PostSun Mar 02, 2008 9:37 pm  Reply with quote  

Starting this thread in response to NWO's request to PI...hope no-one minds me hijacking it in his absence.
I'm really interested in this subject and am genuinely curious to know what people who don't believe in evolution DO believe in. Personally, I believe some higher power created the spark which made the universe and life evolved from there on.

So, quoting NWO: " I can't accept the examples you've given though. Natural selection and adaptation to the prevailing environment yes, but not evolution, ie ape becomes man, pterodactyl becomes an owl etc."
I'm struggling with this.

Evolution is given this definition:
1. A gradual process in which something changes into a different and usually more complex or better form. See synonyms at development.
2.
1. The process of developing.
2. Gradual development.
3. Biology.
1. Change in the genetic composition of a population during successive generations, as a result of natural selection acting on the genetic variation among individuals, and resulting in the development of new species.
2. The historical development of a related group of organisms; phylogeny.
4. A movement that is part of a set of ordered movements.
5. Mathematics. The extraction of a root of a quantity.

[Latin ēvolūtiō, ēvolūtiōn-, from ēvolūtus, past participle of ēvolvere, to unroll. See evolve.]

So surely natural selection and adaptation to the prevailing environment is what evolution is all about?

Some interesting reading:

Dinosaurs - Birds: http://www.flwildflowers.com/birdsdinosaurs.html

Using DNA to study evolution: http://www.hhmi.org/research/investigators/carroll_bio.html

The Short Proof of Evolution by Ian Johnston: http://www.mala.bc.ca/~johnstoi/essays/courtenay1.htm
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shatoga





Joined: 23 Nov 2002
Posts: 1297
PostMon Sep 29, 2014 1:43 pm  Reply with quote  

Plants 'do maths' to control overnight food supplies

By Helen Briggs BBC News | 23 June 2013
www.bbc.co.uk/news/health-22991838


Plants have a built-in capacity to do maths, which helps them regulate food reserves at night, research suggests.

UK scientists say they were "amazed" to find an example of such a sophisticated arithmetic calculation in biology.

Mathematical models show that the amount of starch consumed overnight is calculated by division in a process involving leaf chemicals, a John Innes Centre team reports in e-Life journal.

Birds may use similar methods to preserve fat levels during migration.

The scientists studied the plant Arabidopsis, which is regarded as a model plant for experiments.

'Astonished'

Overnight, when the plant cannot use energy from sunlight to convert carbon dioxide into sugars and starch, it must regulate its starch reserves to ensure they last until dawn.

Experiments by scientists at the John Innes Centre, Norwich, show that to adjust its starch consumption so precisely, the plant must be performing a mathematical calculation - arithmetic division.

“This is the first concrete example in biology of such a sophisticated arithmetic calculation” [said] Prof Martin Howard John Innes Centre, Norwich. "They're actually doing maths in a simple, chemical way - that's amazing, it astonished us as scientists to see that," study leader Prof Alison Smith told BBC News.

"This is pre-GCSE maths they're doing, but they're doing maths."

The scientists used mathematical modelling to investigate how a division calculation can be carried out inside a plant.

During the night, mechanisms inside the leaf measure the size of the starch store. Information about time comes from an internal clock, similar to the human body clock.

'Sophisticated'

The researchers proposed that the process is mediated by the concentrations of two kinds of molecules called "S" for starch and "T" for time.

If the S molecules stimulate starch breakdown, while the T molecules prevent this from happening, then the rate of starch consumption is set by the ratio of S molecules to T molecules. In other words, S divided by T.

"This is the first concrete example in biology of such a sophisticated arithmetic calculation," said mathematical modeller Prof Martin Howard, of the John Innes Centre.

The scientists think similar mechanisms may operate in animals such as birds to control fat reserves during migration over long distances, or when they are deprived of food when incubating eggs.

Commenting on the research, Dr Richard Buggs of Queen Mary, University of London, said: "This is not evidence for plant intelligence. It simply suggests that plants have a mechanism designed to automatically regulate how fast they burn carbohydrates at night.

Plants don't do maths voluntarily and with a purpose in mind like we do."
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