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originally posted by: WarminIndy
originally posted by: Barcs
originally posted by: WarminIndy
a reply to: Barcs
Hmm, you didn't read the abstract, only my quote from it. OK here you go abiogenesis taught in textbooks
I'm sorry, but doesn't McGraw-Hill still publish textbooks for school?
Um, that link described the Miller Urey experiment which ACTUALLY happened. It even says right at the bottom "hypothesized". Where does it say that abiogenesis is a fact? Every study you quote goes against what you claim. Why is that?
Who do they say hypothesized? Neither Miiler nor Urey. Those two men merely tested the hypothesis.
What was the conclusion offered? Did they say the experiment didn't answer anything? Did they go on to say the hypothesis only worked for that experiment and yet wasn't that same experiment done to attempt to prove abiogenesis? And you are promoting the soft language.
Who hypothesized?
What was the purpose of the experiment?
What are the results of the experiment?
Did the experiment fail?
Where does the experiment lead to?
What do the results mean in understanding the process of evolution?
If it is not relevant, then why teach it?
But please, go on.
This water is not in a form familiar to us -- it is not liquid, ice or vapor. This fourth form is water trapped inside the molecular structure of the minerals in the mantle rock. The weight of 250 miles of solid rock creates such high pressure, along with temperatures above 2,000 degrees Fahrenheit, that a water molecule splits to form a hydroxyl radical (OH), which can be bound into a mineral's crystal structure.
originally posted by: Barcs
originally posted by: WarminIndy
originally posted by: Barcs
originally posted by: WarminIndy
a reply to: Barcs
Hmm, you didn't read the abstract, only my quote from it. OK here you go abiogenesis taught in textbooks
I'm sorry, but doesn't McGraw-Hill still publish textbooks for school?
Um, that link described the Miller Urey experiment which ACTUALLY happened. It even says right at the bottom "hypothesized". Where does it say that abiogenesis is a fact? Every study you quote goes against what you claim. Why is that?
Who do they say hypothesized? Neither Miiler nor Urey. Those two men merely tested the hypothesis.
What was the conclusion offered? Did they say the experiment didn't answer anything? Did they go on to say the hypothesis only worked for that experiment and yet wasn't that same experiment done to attempt to prove abiogenesis? And you are promoting the soft language.
Who hypothesized?
What was the purpose of the experiment?
What are the results of the experiment?
Did the experiment fail?
Where does the experiment lead to?
What do the results mean in understanding the process of evolution?
If it is not relevant, then why teach it?
But please, go on.
All of your questions were answered by Hydeman and in the video that you sourced. That experiment proved that basic organic molecules can form in the right conditions. It didn't say anywhere that it proved abiogenesis. What it did was open up the door for further experimentation to learn more about it. It was an experiment, and it is taught as a science experiment. What is your objection here? Should they ignore it? If so, why?
originally posted by: WarminIndy
What was the premise of the experiment in the first place?
Was it not set up to prove abiogenesis? And it failed to prove abiogenesis, so then it cannot be used as a model. So why is it continued to be taught when other experiments can be proven?
How about simply teaching children at the age of learning about science other experiments that are easy to grasp? Why does this one remain? To teach that the atmosphere contains hydrogen?
What is the purpose of promoting this one? Why not the famous experiments of trying to breed chimpanzees and humans? That one failed also, but it isn't taught to most students.
1: Does every individual of any group of species mutate at the same rate as all members?
In genetics, the mutation rate is a measure of the rate at which various types of mutations occur over time. Mutation rates are typically given for a specific class of mutation, for instance point mutations, small or large scale insertions or deletions. The rate of substitutions can be further subdivided into a mutation spectrum which describes the influence of genetic context on the mutation rate.
There are several natural units of time for each of these rates, with rates being characterized either as mutations per base pair per cell division, per gene per generation, or per genome per generation. The mutation rate of an organism is an evolved characteristic and is strongly influenced by the genetics of each organism, in addition to strong influence from the environment. The upper and lower limits to which mutation rates can evolve is the subject of ongoing investigation.
There are basically three ways to estimate the mutation rate in the human lineage. I refer to them as the Biochemical Method, the Phylogenetic Method, and the Direct Method.
The Biochemical Method is based on our knowledge of biochemistry and DNA replication as well as estimates of the number of cell divisions between zygote and egg. It gives a value of 130 mutations per generation. The Phylogenetic Method depends on the fact that most mutations are neutral and that the rate of fixation of alleles is equal to the mutation rate. It also relies on a correct phylogeny. The Phylogenetic Method gives values between 112-160 mutations per generation. These two methods are pretty much in agreement.
The Direct Method involves sequencing the entire genomes of related individuals (e.g. mother, father, child) and simply counting the new mutations in the offspring. You might think that the Direct Method gives a definitive result that doesn't rely on any assumptions, therefore it should yield the most accurate result. The other two methods should be irrelevant.
This would be true if the Direct Method were as easy as it sounds but things are more complicated.
But if the mutation is reversed, then it is not passed on.
Mutations can occur in two different directions.
A.
A forward mutation is a mutation which changes a wild type allele into a new allele (for example, a mutation in one of the genes coding for color producing enzymes may change a wild type [normal color] allele into an albino allele).
B.
A true reversion (reverse mutation) is a mutation which changes a mutant allele back into a wild type allele (for example, in the previous example, a reversion would be anohter mutation at exactly the same location of the first mutation, hwich simply reverses the change made the first time, changing the albino allele back into a wild type [normal] allele). As you might expect, true reversions are much less common than forward mutations because the "target area" is much smaller. A typical gene is hundreds of bases long; a forward mutation can be achieved by altering any one of many of those bases. But a reversion must hit exactly the previously altered base, and must alter it in such a way as to change it back to what was originally in that position.
C.
A suppressor mutation seems like a reversion, but is actually a second change in the same gene, at a different site in the gene, which compensates for the forward mutation in the behavior of the gene product. The gene actually now has two differences when compared to the original wild type, but the protein made following its instructions works just like the original, wild type protein.
edit on 7/9/2014 by rnaa because: spelling; sentence structure
originally posted by: WarminIndy
What was the premise of the experiment in the first place?
Was it not set up to prove abiogenesis? And it failed to prove abiogenesis, so then it cannot be used as a model. So why is it continued to be taught when other experiments can be proven?
How about simply teaching children at the age of learning about science other experiments that are easy to grasp? Why does this one remain? To teach that the atmosphere contains hydrogen?
What is the purpose of promoting this one? Why not the famous experiments of trying to breed chimpanzees and humans? That one failed also, but it isn't taught to most students.
”This…whatever it was…has now been joined by another…whatever-it-is… and they are now proceeding in company. Would you mind coming with me, Piglet, in case they turn out to be Hostile Animals?” A.A. Milne in Winnie the Pooh
”Then would you read a Sustaining Book, such as would help and comfort a Wedged Bear in Great Tightness?”A.A. Milne in Winnie the Pooh
originally posted by: hydeman11
a reply to: WarminIndy
Howdy,
I need to ask for citation of these claims of the San Andreas fault causing California to fall into the Pacific. I find this claim very difficult to believe, but I am open to any sources of information that might persuade me otherwise.
See, I find it difficult to believe because the San Andreas is a right-lateral strike slip fault, meaning that the plates are moving towards the right when an observer is on one plate looking at the other... This image might help.
nationalatlas.gov...
Sincere regards,
Hydeman
originally posted by: Answer
To the OP:
You could do yourself a big favor and seem less aggressive if you try to understand this basic fact:
Science deals in observable phenomenon and makes educated statements based on that phenomenon. When I say "phenomenon", I'm not talking about a single instance, I'm talking about repeatable evidence. The reason there are very few ideas put forward as hard fact is because scientists leave an opening for future discoveries to change the current ideas. Religious people love to point out all the "assumptions" and "theories" and "suppositions" in science but it makes them look extremely foolish. Simple fact is, no scientist is going to say "this is absolutely 100% fact and there's no way anyone can further explain what I've just discovered." This does not mean that scientists are presenting random wild guesses as truth, as religious folks tend to claim. Scientists put forward the best possible explanation using what we currently know about any given subject.
Religion deals in mystical explanations straight out of the writer's imagination to explain phenomenon that are either unknowable or were not known at the time of the text's writing. The big difference is that many religious followers accept these primitive explanations as absolute truths without a hint of irony even though their own religious texts evolved over thousands of years. Which version of the creation story do you believe? The one in the King James Bible or the one believed by the Sumerians? Both talk about God creating the universe but they have different accounts. Both versions were considered by many of their followers to be the absolute unwavering truth.
If I asked 1st grade students to write down how the universe was created, there's a good chance I'll eventually get a story very close to what's in the bible. "God did it" is the easy way out instead of putting some effort into discovering the truth about our world. Most well-educated religious followers leave some room for science to explain some of the more general ideas in the bible. Uneducated religious followers who don't want to bother with LEARNING use their chosen bible as the explanation for everything and shun science mainly because they can't process what's being proposed. "We come from monkeys? Well that just don't sound right... Science is a load of horsesh!t!!"
I was raised in Mississippi and I spent 12 years in a Christian school. I'm very familiar with the great divide between science and religion.
Did I ever say that I was against science? Please point me to where I said that.
This is a current myth that all religious people are against science.
Bears eat honey because they must, humans eat honey because they may. And that's the difference.
Yes. Bears do love honey and are attracted to beehives. But unlike in Winnie the Pooh, the bears eat more than just honey. They will also consume the bees and larvae inside the beehive, which are a good source of protein. Both brown and black bears will raid beehives.
Unlike Winnie the Pooh, real bears don’t only eat honey. Polar bears eat mostly fat and meat, including seals and other marine mammals. Grizzly and black bears eat mostly vegetation, insects, berries, and meat, especially salmon and young moose, caribou and deer.
This was an exchange I had with my wife a few years ago. She is the self describe "die hard scientific based realist."
Hell a few days ago she was laying on my car hood resting after a bit of gardening. According to her, this was the first time in her life she noticed just how captivating the occasional white fluffy cloud looked against the deep blue of the sky.