Evolution Definition and 692 Threads

CAtaclysmic evolution! project ..help! i have to do a project where an asteroid hit Earth 500 million years ago. My project is onthe camel and how it would adapt to these feature. I got most of it but there is one part that i need a little help on. The Earth oxygen is decreased from the curren...

In my fall 2004 biology class at junior college, we covered the debate with the Creationists who point to the 2nd Law of Thermodynamics, that entropy increases. Ever since my 9th grade biology class in 1990-1, where we staged a debate over Creation vs. evolution, I've been trying to figure this...

Are intelligent people really happier than less intelligent people? Some people are less aware and more oblivious to what goes on around them and seem quite content with it and living happy lives even though they don't seem to realize or care who or what they perhaps unintentionally hurt. Would...

I'm having some interpretation problems with a rotating dipolar magnetic field, so I need your opinion (I apologise for my bad English). Let there be a magnetic moment "mu" tilted relative to the rotation axis (the "z" axis), with an inclination angle "alpha". The magnetic moment is steadily...

is it proportional to a^3 or 1 / a^3 . thanks!

Note that I kind of subscribe to Dawkins' model. Also, the location of the file is at http://students.washington.edu/achen89/4_evolution2nddraft.doc . I can receive e-mail at hemaalpha@gmail.com. Thanks! Evolution is a comprehensive biological theory that draws much of its support from many...

hello i'm new here and looking for some help with my assignment. i am currently working on an assignment about how the eukaryote evolved from the prokaryote, currently i have come across only one theory which is symbiosis, i need to find several theories and was wondering if anyone here had...

Which one do you believe, Charles Darwin's Evolution Theory or Bible ? I prefer Darwin's theory because his theory pointed everything varying with time and environment. Not everything in this universe is not stable and static but moving and dynamic. And his theory is scientific theory.

As I've learned it, mutations can be grouped into 3 categories as they relate to evolution: harmful, neutral, or beneficial. Is there any way to figure out the ratios (in relation to each other) of these types of mutations?

The source is lost to me now, but I remember hearing that cancer and evolution (and even radioactive mutation) are all the same physical process, and that the difference between them is human conception. That is, if the changes result in what was see as a benefit, we call it evolution, but if...

As I understand it evolution is the process of a species changing to suit it's environment. Based on this definition I ask a question. Is Eugenics and Reprogenetics the only way? I believe that humans will never evolve from their current form because humans now change the environment to...

Hey, would anyone be able to tell me quality websites/ or help to answer the following questions: 1. What is a star? 2. How Astronomers can tell the difference between different stellar objects? 3. What powers a star? 4. The evelotionary path of a star and it's different stages. 5. Why...

It seems to me that people with flat feet should have been weeded out by evolution back in the day when they actually had to walk and run around all day long. Am I missing something? Aren't people with flat feet at a huge disadvantage in those conditions?

http://news.nationalgeographic.com/news/2006/08/060810-evolution.html"

http://www.latimes.com/news/local/la-me-ocean30jul30,0,7764272.story?page=1 "...In many places — the atolls of the Pacific, the shrimp beds of the Eastern Seaboard, the fiords of Norway — some of the most advanced forms of ocean life are struggling to survive while the most primitive are...

I'm looking for a good book/paper/whatever that discusses the role of self-awareness in the evolution of primates/early humans. Basically, I'm looking for a work that addresses questions like: What is the role of self-awareness in evolution? Does self-awareness confer some survival benefit...

On 22 june 76 Academies of Science all over the world made a statement regarding "Teaching of evolution". ( http://www.kva.se/KVA_Root/files/newspics/DOC_2006622103638_83921484512_IAP_Evolution.pdf ). Since ID-fans often try to convince people (and themselves?) that there is a quite...

Great op-ed piece in the New York Times by evolutionary biologist Olivia Judson. Just thought this was a good read considering how many threads on evolution have been started recently...

Exactly how can evolution theory be falsified?

hi guys, I want to learn about the theory of evolution and its mechanism at the micro and maco levels, punctuated equilibrium, gradualism, game theory, natural selection, modern synthesis, evidence for evolution, open questions about evolution, etc. I would be glad to read your suggestions...

Is there any way to estimate the speed of evolution as it should*[/color] work by theory (which means: looking at natural selection and random mutations, as opposed to looking at the fossil record and dating them, reconstructing evolution as it has worked)? Is this completely impossible as of...

I am a science fiction writer and I need some help with developing a plausible alien species. The species has to end up technologically advanced. What would be the effect on a species that evolved on a world with 74% nitrogen and 25% oxygen (other gases remaining similar to Earth)? Thanks for...

I'm just wondering is the Darwin theory of evolution is actually acceptable? We were thought to believe about this theory since we were young but as our mind expands with other info I seem to find this theory somewhat false. He states that human origin comes from apes... but if its true why are...

Do the rates of galactic evolution (first 3 billion years) agree in all parts of the observed sky? Or does certain part of evolution vary within the universe by ~1 billion years? Could one part of the sky at redshift z=4 be ~500 million years ahead in evolution than another part of the sky at...

Note from SpaceTiger: This discussion originated in the "what existed before the big bang?" thread. Well put marcus. I think we are on the same page [albeit you are more eloquent] - and I tend toward being brutally blunt. We reside in an OBSERVABLE universe. And, by definition, it includes...

If I have two positive definite Hermitian NxN matrices A and B, if I adiabatically change the components of A to B (constraining any intermediate matrices to be Hermitian as well, but not necessarily positive definite) while \"following\" the eigenvalues ... will the mapping of the eigenvalues...

OK I apologize I did it again and overlooked a point and thus you sparked an interest, thanks. Metabolic Process In oxidations of glucose, as described in respiration, energy is released and is shown to be held within atp’s as reserved energy but we also know this reaction is what gives...

Hello all, First I'd like to say that I'm not a great scientists nor a great thinker. All I do is try to derive a common logic. A few days ago, I had a lesson on "how do mutations affect us." And so I copied all the definitions into my notebook. One of them was 'Germ-line mutation" and...

do they have any role on evolution?

Ok, so evolution is the process in which traits are passed on from generation to generation, and I read the basic mechanisms are natural selection and genetic drift acting on genetic variation created by mutation, sex, and gene flow. What does all that mean, I'm a bit confused with all this...

Because Bacteria evolve far faster than humans, bacteria would be ideal for testing evolution. If you isolate one bacteria population from another after a while they should evolve into different species, right? Actually, I have heard this test has already been carried out but is this true? If...

A philosophy that underpins many approaches to understanding quantum mechanics (the many worlds interpretation in particular, but collapse models and other related ideas also) is that continuous Schroedinger evolution is somehow `nicer', `preferred', or `more fundamental' than the "damned...

ok, some stuff doesn't make sense to me, so i'll just sum up all i know... maybe it will clear things up, and i'll mark the parts I am unsure of\want clearification on. for your convenience i'll write numbers for each remark so you can just write the number and your response to it. at first...

Great "why?"s of evolution. We know what happened in evolution - about how cells formed, became eukaryotes. then clumped together, became vertebrates (fish,) amphibians and reptiles, who evolved into mammals and birds. But... why? What was the point of coming out of water? What caused these...

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Stellar evolution modeling is a science that, to put it charitably, plods along. Here is one of the more interesting papers I've seen in awhile: http://www.arxiv.org/abs/astro-ph/0601502 Stellar evolution of massive stars at very low metallicities

I was just thinking today that I remember hearing that some insects like ladybugs and monarch butterflies are poisonous to birds that eat them. I got around to wondering how such a trait could evolve. The thing is that, while I see how being poisonous is advantageous to ladybugs in general, I...

Something I read promoting intelligent design states that science is disproving the connection between chimps and people. Now I read a science article on the matter and it states that the base pairs compare and there is about 1 or 2 % difference, but of the actual genes they are as much as 80%...

I have been thinking of the evolution of the human race over time. Obviously, environmental factors have prevented those with detrimental traits from passing them on, bringing us to our current form. However, with the amount of technological advances in our current time and in the near future...

http://www.origins.tv/darwin/pagetree.jpg I was googling for a hominid timeline when I stumbled on this chart which seems to be saying that all our struggles up from a primordial protoplasmic globule have been leading us to Barbi. http://www.origins.tv/darwin/trees.htm

Humans have a big influence on the evolution process of many species. Do you think they should? Is this fair?

Wikipedia states that evolution is fact; however, how evolution works is theory. Is this true? A friend of mine doesn't believe in evolution, and I have been trying to convince him. Is there a scientific dictionary that will give me an answer?

Hey, Just wondering: How does evolution explains the process by which some species, spceially from insects, have mimicry tactics for defense? Thx in advance, Mimicry: The phenomenon in which some species [the mimic] resembles another species [the model] and gains protection from the...

This is a question geared toward human evolution, but I figured a biologist would be able to answer it. There are two parts: 1. If supposedly, we physically evolved (less hair, stand up straight, etc.) because we changed our behaviour, would it be safe to say that generally, as something...

I was wondering if it was possible, via biological thermodynamics, to demonstrate that evolution does not violate the 2nd law of thermodynamics in mathematical terms. From my understanding, the Earth is a closed system (this seemed odd, but I read this in a book on biological thermodynamics. I...

Hi. I have a problem with a statement that was in the first chapter of my "World Religions" book for school. It first explains that the word "God" can have many different meanings. It then concludes the chapter with "It is a fact, not a mystery, that God, whatever or whoever God might be...

people who believe in creation say evolution violates the 2nd law of thermodynamics. those who believe in evolution say it does not. who's right? if it does violate the 2nd law of thermodynamics why and how? i just want to know who's right on this issue. p.s. sorry if this has been asked before...

http://www.guardian.co.uk/Archive/Article/0,4273,4348751,00.html For those who dream of a better life, science has bad news: this is the best it is going to get. Our species has reached its biological pinnacle and is no longer capable of changing. That is the stark, controversial view of a...

Disclaimer: While I think I'm pretty well educated in math and the physical sciences, I'm pretty much a moron in biology. Be nice to me.:redface: I read the following statement from one George Olshevsky, responding to a Creationist argument: He was responding to the claim that...

Why do antibiotic super bugs keep evolving more and more so they are resistant to antibiotics? Wouldn't this evolution be considered on a macroscale or would you say microscale seeing as how they are becoming stronger and stronger? It's interesting to learn that these things are becoming more...