A debate for all....
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mutation is occured by ultra violet rays rite? dat cums 4m da sun...
so sciece says dat da ozone layer is der to stop dose rays...
now dat the ozone layer is thinnin its a different story. but dose billion years ago, im sure it was thick enuf to protect da world....a slight rays could change da body features, but to change a monkey into a man!?!
so sciece says dat da ozone layer is der to stop dose rays...
now dat the ozone layer is thinnin its a different story. but dose billion years ago, im sure it was thick enuf to protect da world....a slight rays could change da body features, but to change a monkey into a man!?!
root
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perhaps you should think about evolution this way, 10% of Europeans are immune to HIV (Aids) so this 10% cannot contract the disease & the mutated gene is known as CCR5-D32. The mutation is beleived to occur in response to pestilences such as the Great Plague of London in 1665-66.
This 10% base figure will over time increase as the subsequent generations pass on this HIV blocking gene. If each holder of this gene goes forth and multiplies then the 10% figure will increase amongst the population. (this is evolution evolving right now)
Now consider an hypothosis. If aids was as deadly as it is but could infect humans as easily as the common cold,
1. Would it force man into extinction?
2. Would anyone be surprised if all humans in 1000 years time "ALL" carried this gene under this given hypothosis?
Further, if you think about it your DNA will not match 100% other human beings (for a start you probably do not have the gene that these 10% of europeans have) and you may well have a closer genetic match with a chimpanzee than to me or (my chimpanzees)!!!!
This 10% base figure will over time increase as the subsequent generations pass on this HIV blocking gene. If each holder of this gene goes forth and multiplies then the 10% figure will increase amongst the population. (this is evolution evolving right now)
Now consider an hypothosis. If aids was as deadly as it is but could infect humans as easily as the common cold,
1. Would it force man into extinction?
2. Would anyone be surprised if all humans in 1000 years time "ALL" carried this gene under this given hypothosis?
Further, if you think about it your DNA will not match 100% other human beings (for a start you probably do not have the gene that these 10% of europeans have) and you may well have a closer genetic match with a chimpanzee than to me or (my chimpanzees)!!!!
Mainul_Islam
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root, that is a weak arguement
please explain how single-celled organisms evolved into such complex living beings with the mind of its own. u may be able to explain some concepts with theories u dont have an explanation for everything of evolution
can u tell me what was the need to evolve into mammals from reptiles? if it was something important, why dont other reptiles evolve too? why are some creatures exactly the same as their ancestors were millions of years ago? can u name some species (animals) that is going thru the process of evolution (having features different from the rest of their kind)? most importantly, how did the VERY FIRST living thing come into being?
please explain how single-celled organisms evolved into such complex living beings with the mind of its own. u may be able to explain some concepts with theories u dont have an explanation for everything of evolution
can u tell me what was the need to evolve into mammals from reptiles? if it was something important, why dont other reptiles evolve too? why are some creatures exactly the same as their ancestors were millions of years ago? can u name some species (animals) that is going thru the process of evolution (having features different from the rest of their kind)? most importantly, how did the VERY FIRST living thing come into being?
j4763
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So do you beleive that these minor rays also help change the way certain race's look (face features). Black people tend to have wider nose's, thicker lips. White's have thinner lips and thinner hair. Chinise/Jap's have narrow eye's.
Were all these to do with the sun's rays and evolotion played no part?
Mainul_Islam
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mutation always comes out as a bad result... i've never seen or even heard of anything that mutated into a more advanced and better life form... mutation only distorts the genes and makes the creature abnormal, so u can eliminate mutation as being a possibility
Changing skin colour is adapating, not evolution. Evolving means to gain abilities and traits that the predecessors did not have. Darker skin colour is not evolution, because skin is still skin whether black or white. It would be evolution if people living in hotter countries actually had something that people living in cooler countries didn't have that was substantial enough to class them as two different species.
PS: You can not say 'black skin' is a trait that people living in hot colours gained because the early humans were from Africa (or India or Arabia/Persia - the places were the earliest human remains were found).
Mainul_Islam
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whats sad is churches are accepting evolution out of fear of Christianity being portrayed wrong just because scientists are backing up the theory; churches dont want to be seen scientifically wrong again like in Galeleo's time, so they accept the theory ahead of time before even being proven
I found this site, for relaxation in this termoil that is created, to fear. I found it peaceful and beautiful.....www.thedailymotivator.com...
root
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It's not an arguement nor was it debatable. It was a fact and a given hypothosis
Do you really think I am going to explain the theory of evolution, should you not do that for yourself and then discuss any "issues" you may have.
Like any science, your right to say we don't know everything.
Firstly, that is a nonsensical question. Evolution is about gene-flow and adaptation to a given environment.
Again, evolution is about adaptation to a given environment. Evolutionary change is often very slow and very progressive whilst at times prity rapid.
Evolution made a prediction that some species will experience so little change in environment that the species themselves don't evolve a great deal(which by the way includes predators, since new predators also have an impact on evolution).
Such a question as this only demonstrates your lack of understanding of evolution, ALL life is going through evolution as we speak. Evolution does not have a finishing point, all life past & present are intermediates?
However, some recent examples are:
http://www.islamicboard.com/comparative-religion/15082-darwins-nightmare.html
New study finds natural selection IS a general force behind the formation of new species.
http://www.islamicboard.com/comparative-religion/15496-proof-evolution.html
The theory of evolution does not seek to answer that question, where life came from and how it started is a big scientific mystery that Abiogenesis seeks to find and answer for including panspermia which is what I personally support as the probable source when found. Evolution is only concerned with how life "Evolved" not how it was "Created"
Panspermia is the hypothesis that the seeds of life are ubiquitous in the universe, that they may have delivered life to Earth, and that they may deliver or have delivered life to other habitable bodies; also the process of such delivery.
j4763
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I think sure find skin is not just skin. Darker skin does protects aganist the sun a lot better than fairer skin (fact). When the Africans moved north into Europe there skin evolved to a lighter shade for the strength of the sun is far less damaging. So people in hotter country's do have something over people who live in cooler countries and vice versa thanks to evolving or as some may call it adapation.
Cheb
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I am a Muslim and I do believe in evolution. I have not come across anything to suggest that I shouldnt. Evolution has and always will exist because it *needs* to. If it doesnt then it is likely there would be much less species on this earth.
Now do not get me wrong, i do not believe we were chimps (nor do most people) nor do I believe we were Neanderthals at one point. I believe the first actual humans were Adam and Eve and we are their decedents and we have evolved from them.
Now regarding evolution in animals, if you do a little research you would see that it definitely exists. When a certain species is forced to live in an environment that it normally would not be able to live in, assuming it does not go extinct, it will evolve and adapt to its environment. In fact I can go as far as saying dinosaurs have evolved into birds.:X
Now do not get me wrong, i do not believe we were chimps (nor do most people) nor do I believe we were Neanderthals at one point. I believe the first actual humans were Adam and Eve and we are their decedents and we have evolved from them.
Now regarding evolution in animals, if you do a little research you would see that it definitely exists. When a certain species is forced to live in an environment that it normally would not be able to live in, assuming it does not go extinct, it will evolve and adapt to its environment. In fact I can go as far as saying dinosaurs have evolved into birds.:X
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so what you are implying is that africans are more 'less human' and more 'chimp' than white/british?
cos some africans still live in the bushes so are they animals
root
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Abstract:
Skin color is one of the most conspicuous ways in which humans vary and has been widely used to define human races. Here we present new evidence indicating that variations in skin color are adaptive, and are related to the regulation of ultraviolet (UV) radiation penetration in the integument and its direct and indirect effects on fitness. Using remotely sensed data on UV radiation levels, hypotheses concerning the distribution of the skin colors of indigenous peoples relative to UV levels were tested quantitatively in this study for the first time.
The major results of this study are: (1) skin reflectance is strongly correlated with absolute latitude and UV radiation levels. The highest correlation between skin reflectance and UV levels was observed at 545 nm, near the absorption maximum for oxyhemoglobin, suggesting that the main role of melanin pigmentation in humans is regulation of the effects of UV radiation on the contents of cutaneous blood vessels located in the dermis. (2) Predicted skin reflectances deviated little from observed values. (3) In all populations for which skin reflectance data were available for males and females, females were found to be lighter skinned than males. (4) The clinal gradation of skin coloration observed among indigenous peoples is correlated with UV radiation levels and represents a compromise solution to the conflicting physiological requirements of photoprotection and vitamin D synthesis.
The earliest members of the hominid lineage probably had a mostly unpigmented or lightly pigmented integument covered with dark black hair, similar to that of the modern chimpanzee. The evolution of a naked, darkly pigmented integument occurred early in the evolution of the genus Homo. A dark epidermis protected sweat glands from UV-induced injury, thus insuring the integrity of somatic thermoregulation. Of greater significance to individual reproductive success was that highly melanized skin protected against UV-induced photolysis of folate (Branda &Eaton, 1978, Science201, 625–626; Jablonski, 1992, Proc. Australas. Soc. Hum. Biol.5,455–462, 1999, Med. Hypotheses52, 581–582), a metabolite essential for normal development of the embryonic neural tube (Bower & Stanley, 1989, The Medical Journal of Australia150, 613–619; Medical Research Council Vitamin Research Group, 1991, The Lancet338, 31–37) and spermatogenesis (Cosentino et al., 1990, Proc. Natn. Acad. Sci. U.S.A.87, 1431–1435; Mathur et al., 1977, Fertility Sterility28, 1356–1360).
As hominids migrated outside of the tropics, varying degrees of depigmentation evolved in order to permit UVB-induced synthesis of previtamin D3. The lighter color of female skin may be required to permit synthesis of the relatively higher amounts of vitamin D3necessary during pregnancy and lactation.
Skin coloration in humans is adaptive and labile. Skin pigmentation levels have changed more than once in human evolution. Because of this, skin coloration is of no value in determining phylogenetic relationships among modern human groups.
Copyright 2000 Academic Press
It is a FACT that your genes will probably be more similar to a chimpanzee than mine are to you, and mine will be more of a match to my chimpanzees than yours. Your missing an important point, 98% or thier abouts of a chimpanzee DNA will match yours, further your and mine DNA WILL NOT match 100%!!!! white british DNA will differ from black african DNA. Make no mistake though, we are all HUMAN and one species, prrof of this is within mytocondrial DNA, this is DNA only passed through females and remains unchanged with no mutations for thousands of years.
Mitochondrial Eve is the name given by researchers to the woman who is the most recent common matrilineal ancestor of all living humans. We know about Eve because of mitochondria. Mitochondria are organelles that are only passed from mother to offspring. Each mitochondrion contains Mitochondrial DNA (mtDNA), and the comparison of DNA sequences from mtDNA reveals a phylogeny. Based on the molecular clock technique of correlating elapsed time with observed genetic drift, Eve is believed to have lived in a population of humans about 150,000 years ago in Africa.
Skin color is one of the most conspicuous ways in which humans vary and has been widely used to define human races. Here we present new evidence indicating that variations in skin color are adaptive, and are related to the regulation of ultraviolet (UV) radiation penetration in the integument and its direct and indirect effects on fitness. Using remotely sensed data on UV radiation levels, hypotheses concerning the distribution of the skin colors of indigenous peoples relative to UV levels were tested quantitatively in this study for the first time.
The major results of this study are: (1) skin reflectance is strongly correlated with absolute latitude and UV radiation levels. The highest correlation between skin reflectance and UV levels was observed at 545 nm, near the absorption maximum for oxyhemoglobin, suggesting that the main role of melanin pigmentation in humans is regulation of the effects of UV radiation on the contents of cutaneous blood vessels located in the dermis. (2) Predicted skin reflectances deviated little from observed values. (3) In all populations for which skin reflectance data were available for males and females, females were found to be lighter skinned than males. (4) The clinal gradation of skin coloration observed among indigenous peoples is correlated with UV radiation levels and represents a compromise solution to the conflicting physiological requirements of photoprotection and vitamin D synthesis.
The earliest members of the hominid lineage probably had a mostly unpigmented or lightly pigmented integument covered with dark black hair, similar to that of the modern chimpanzee. The evolution of a naked, darkly pigmented integument occurred early in the evolution of the genus Homo. A dark epidermis protected sweat glands from UV-induced injury, thus insuring the integrity of somatic thermoregulation. Of greater significance to individual reproductive success was that highly melanized skin protected against UV-induced photolysis of folate (Branda &Eaton, 1978, Science201, 625–626; Jablonski, 1992, Proc. Australas. Soc. Hum. Biol.5,455–462, 1999, Med. Hypotheses52, 581–582), a metabolite essential for normal development of the embryonic neural tube (Bower & Stanley, 1989, The Medical Journal of Australia150, 613–619; Medical Research Council Vitamin Research Group, 1991, The Lancet338, 31–37) and spermatogenesis (Cosentino et al., 1990, Proc. Natn. Acad. Sci. U.S.A.87, 1431–1435; Mathur et al., 1977, Fertility Sterility28, 1356–1360).
As hominids migrated outside of the tropics, varying degrees of depigmentation evolved in order to permit UVB-induced synthesis of previtamin D3. The lighter color of female skin may be required to permit synthesis of the relatively higher amounts of vitamin D3necessary during pregnancy and lactation.
Skin coloration in humans is adaptive and labile. Skin pigmentation levels have changed more than once in human evolution. Because of this, skin coloration is of no value in determining phylogenetic relationships among modern human groups.
Copyright 2000 Academic Press
It is a FACT that your genes will probably be more similar to a chimpanzee than mine are to you, and mine will be more of a match to my chimpanzees than yours. Your missing an important point, 98% or thier abouts of a chimpanzee DNA will match yours, further your and mine DNA WILL NOT match 100%!!!! white british DNA will differ from black african DNA. Make no mistake though, we are all HUMAN and one species, prrof of this is within mytocondrial DNA, this is DNA only passed through females and remains unchanged with no mutations for thousands of years.
Mitochondrial Eve is the name given by researchers to the woman who is the most recent common matrilineal ancestor of all living humans. We know about Eve because of mitochondria. Mitochondria are organelles that are only passed from mother to offspring. Each mitochondrion contains Mitochondrial DNA (mtDNA), and the comparison of DNA sequences from mtDNA reveals a phylogeny. Based on the molecular clock technique of correlating elapsed time with observed genetic drift, Eve is believed to have lived in a population of humans about 150,000 years ago in Africa.
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Mainul_Islam
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until it is proven, it is still a theory
root said:
evolution theory says that the animals with poor genes die out and the stronger survives. i dont see how a mammal evolves from a reptile and why did it evolve... u can say it was adaption to the environment, but what does environment have to do with reptiles and mammals? why r there both mammals and reptiles in certain areas if reptiles evolved into mammals due to the environment?
root said:
the theory of evolution completely denies the existence of God. if evolution cannot explain how the first life form came into being, then the theory itself is & remains defeated
czgibson
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Greetings,
I don't know if it does. I know several theists who also believe in evolution.
Peace
I don't know if it does. I know several theists who also believe in evolution.
Peace