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Evolution, Morphology and Exobiology

Discussion of Darwin's theories, modes of natural selection, life form structures, and life off Earth

  1. Started by LostLabyrinths,

    Hi, I’m new here and I’m also starting to teach myself about different kinds of science (My favorites subject so far is dealing with animal life and Evolution)I am here in hopes that I can improve my understanding and knowledge on the subjects. My first subject here is what do you think the human race will be like a billion years from now(Assuming our species has survived that long) what do you think evolution effect will have on the human race in the deep future?

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  2. Started by nec209,

    Wow we got a evolution group!! I'm a big fan of evolution .There are 2 ways of looking at it. The strong stay alive and weak die.I have bean reading lots on how medicine is causing different types of cancer ,turmour ,viruses and diseases so on. We are victim to viruses ,bacteria and diseases so on.The human immune system is shutting down . Stop the medicine and allow evolution and body over time will have strong immune system to viruses ,bacteria and diseases . Or put trillions of dollars into medical research with very litle return.We have lost the war on cancer ,turmour and alot of diseases .The viruses and bacteria are on top of the food chain not peopl…

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  3. Started by drdanger,

    I just read a survey that was... well i wouldn't say shocking, but disappointing at least. According to the survey only about 47% of Americans believe in Evolution, which is pretty close to the 44% who believe in ghosts (though I'm guessing the overlap isn't too dramatic...) but that is vastly overshadowed by the 80% who believe in the existence of God. Link: http://www.marketwatch.com/news/story/More-Americans-Believe-Devil-Hell/story.aspx?guid={9FF6758C-00C0-4673-81B9-6D506085F974} I was thinking that since many Christian denominations take the time to be evangelize, and since acceptance of Scientific fact and logic is so core to public policy and social wellbeing, w…

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  4. Started by drdanger,

    I've been reading about evolution recently and I was curious about a potential experiment that might evidence the idea of speciation, that is, that new species evolve from old ones as a result of changing environmental conditions. I've seen evidence that shows that evolution can occur quite rapidly in many instances, for example an experiment that was conducted by the Grants in the Galapagos showed that average beak size in a finch population shifted dramatically over a short period as a result of a drought. With that in mind I was curious as to why an experiment couldn't be conducted to attempt to create a new species. What I have in mind is to have a group of mice a…

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  5. Started by aguy2,

    in re: "Central Nervous System" Are Homo Sapiens, Sapiens central nervous systems a violation of the observed biological phenomenon of, "just enough to get by", or a texbook example of it? aguy2

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  6. Started by entwined,

    I ran accross this on another forum I frequent. It was someone's avatar. Got me to thinking, with genetic engineering, maybe we could have this as an option.....might come in handy for those small jobs.

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  7. Started by lordmagnus,

    There is some information that this may be possible using some simple IVF techniques to remove human or ape antibodies from the semen sample before implantation in the host. There is one chromosome differance between humans and chimpanzees, and has been rumored that this has been achived by Russian scientists, and a Chinese scientist. Anyone else have any info on the subject?

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  8. Hello, Im new to this forum and i am from holland, so i hope my english is good enough to understand, but i think this is my best bet to get an answer to my question. I'm having an online debat with an creationist, he is a biologist with PHd and all and claims to have an new theory that would blow darwins theory out of the sky. I asked him the question, why do you think we are not descended from apes?In fact, we are apes. His answer is simple, he says that he has studied the human genome and the chimp genome so closely that they could not be related. There are 22.000 genes in the human dna, and 1400 are different with the chimp. So he has based his statem…

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  9. Started by CaptainPanic,

    Good morning! Over coffee, I came up with the following. I believe that Mars is quite a nice place for plants. The atmosphere is nearly pure CO2, which must sound like heaven for a plant if it had ears. The pressure is 750 Pa (7.5 mbar). That means that the CO2 pressure is a lot higher than on earth (where we have merely 35 Pa CO2 pressure). How difficult would it be to grow plants in the Martian atmosphere? I know that the temperature is too low. Water, if available at all, is solid. But those two points can be solved with a simple solution: a greenhouse. The point I'm trying to make is: a greenhouse could be really simple and low-tech. Just …

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  10. Hey have you read this article from new scientist this sound typical of the modern man: http://www.newscientist.com/article/dn16091-were-neanderthals-stoned-to-death-by-modern-humans.html

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  11. Started by Dennisg,

    I was wondering if anyone has done some research into this topic. I know there are some quick answers to this question but I think the topic deserves a lot more study.

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  12. Started by cre8ivmind,

    Most scientists accept that neanderthals and modern man are separate species, and that neanderthals died out about 40,000 years ago (give or take). Is it likely that legends of elves, trolls, orcs, nephilim, etc. may be derived from encounters between modern humans and neanderthals? Could oral traditions and stories of legendary humanoid creatures have survived so long, and have been originally referring to neanderthals? Just an interesting thought...

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  13. Started by bombus,

    Are there any scenarios that would favour the evolution of three legged aliens? Are there any scenarios that could favour three (or more) sexes involved in reproduction? These are two things that I have read in sci-fi that I don't think are likely...

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  14. Started by PikaCHO,

    Why has it been difficult for researchers to determine whether there was interbreeding between our ancestors and Neanderthals? Explain the relationship that is known to exist between the two groups and the evidence for and against interbreeding. Can you please answer this for me? Thank you!

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  15. Started by Dr. Cox M.D.,

    Because the structure of chimp haemoglobin has the same amino acid sequence as humans can chimp blood be transfused into humans or vice versa?

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  16. Started by dichotomy,

    How many mutations are there estimated to be, to get from microbial life to homo sapiens? Are there such estimates?

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  17. Started by Moontanman,

    In recent years the discovery of the Bucky ball, C60 molecule, was touted as proof of the versatile nature of the Carbon bond and an example of why it was so good at being the scaffolding of life. But another element can make Bucky ball type molecules, Boron. The B80 molecule is stable and shows that Boron is also a very versatile atom, does this point to the possibility that Boron might in some environments make a suitable scaffolding for life as well?

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  18. My premise is this, there are basically three ultimate destinies for humanity and complex life on the Earth. 1. We stay here and ride out the Earth and become extinct along with everything else when a natural disaster of some sort wipes out life on the Earth. 2. Humans colonize the solar system by Terra forming other planets and eventually go to the stars and do the same thing there. We would travel via very fast (near C)space craft to other stars with suitable planets, we might take some complex life with us. 3. We colonize the solar system through orbiting colonies and bypass planets altogether. Using these huge colony ships similar to O'Neil cylinders we c…

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  19. Started by BlackPower,

    Honestly. I am a man. Why would i need 2 nipples? When did males ever breastfeed? What is the point of this? What is the evolutionary advantage of having silver dollar nipples as opposed to those real itty bitty tic tac nipples? explain.

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  20. Started by Sparky,

    I know this might sound stupid, but if humans decended from apes and monkeys, then why are there still apes and monkeys? Wouldn't they evolve to. If evolution is true and we did come from apes, how long will it be before the apes of today become something along the lines of the movie "Planet of the Apes"? If you think about it then it is only a matter of time before the apes of today evolve and take over the world.

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  21. Started by Realitycheck,

    I've been butting heads for a year or two on boards with hardcore creationists trying to convince me that information can only be reduced and not added (despite the six-fingered species of humans). Is this the same argument that is typically made about the 2nd Law of Thermodynamics? If not, what is the typical rebuttal to this question? Also, I would like to read information about the evolution of the precursors to the first single-celled organisms. Can someone direct me to good sources of this type of information?

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  22. Started by Yoozer_Naym,

    I've noticed lately how out of all the classes of the animal kingdom, that mammals appear to be the most diverse in anatomy and physiology. I find this particularly interesting since there are very few mammal species. Even more interesting to me is that mammals not only make up such a small group, but we have only been on this earth such a short time compared to most other animal groups such as insects, amphibians, reptiles, etc. But as many kinds of insects there are, they all seem to have more in common anatomically to one another than the few mammal species do. Take, for example a mouse, a lion, an elephant, a bat, a whale, a giraffe , and a human. Now look at how dras…

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  23. Started by pioneer,

    Conservation of endangered species demonstrates how fragile selective advantage can be if the environment does not cooperate with the advantage. We can go into a swamp that has a rare frog which is at the pinnacle of this frog's million year evolution. Through natural selection, survival of the fittest, breeding by the dominant males, we get this creature who as adapted to the swamp. If we set up a boat ramp, and alter the environment; extinct. Conservation tries maintain or tailor the environment to maintain the selective advantage of critters. This is noble but it shows how dependent the selective advantage of critters are, on the environment. What appears to be ev…

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  24. Started by Blade,

    1of3 -- Paleo World - Ape Man http://www.youtube.com/watch?v=6sJuEiaJgm8 2of3 -- Paleo World - Ape Man http://www.youtube.com/watch?v=8mvfzv-iRCo 3of3 -- Paleo World - Ape Man http://www.youtube.com/watch?v=LT0X672Luyk interesting stuff about origins

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  25. Memetic Algorithms Memetic Algorithms (MAs) (good paper) are search techniques used to solve problems by mimicking molecular processes of evolution including selection, recombination, mutation and inheritance. A few important aspects of MAs (Figure 1): The fitness landscape needs to be finite. The search space of the MA is limited to the fitness landscape. There is at least one solution in the fitness landscape (Figure 2). A fitness function determines the relationship between the fitness of the genotype (or phenotype) and the fitness landscape. Selection is based on fitness. Figure 1: Basic lay out of memetic algorithms. A population of individuals…

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