Evolution really is the fundamental principle of biology, but using evolution to learn about biology sometimes requires traveling through time. Ancient DNA gives us a time machine bringing new insights into reach.I can hear the echo of Ken Ham's minions mindlessly shouting "Were you there???" No, but this is the next best thing.
Sequencing the Denisovan genome
There has been a good deal of publicity recently about the sequencing of the Denisovan genome by Svante Pääbo's group at the Max Plank Institute (see here and here for examples). Using brand new technology for sequencing single strands of DNA (single strands as opposed to the normal double-strand), the group was able to achieve a sequencing rate of 30x--every position in the genome was sequenced 30 times. That's comparable to sequencing modern genomes.
While some of the coverage has focused on what can be inferred about the individual from whom the DNA was recovered (female, dark skin, brown eyes and hair) what is much more interesting are the relationships of the Denisovans to various modern human populations and to Neandertals. Also interesting is the identification of genetic changes that have occurred in modern humans, a number of the changes having to do with genes associated with brain function and nervous system development,
Since John Hawks has discussed the paper in some detail, I won't, but will direct you to Hawks' review of the research. One quotation from that piece--the final sentence--is worth repeating:
97 Comments
DS · 1 September 2012
No Ken, I wasn't there and neither were you. But I can sequence DNA that was there. I can draw valid inferences from this data. You really ought to try it some time Ken. By the way, you can do the same thing with fossils.
ksplawn · 1 September 2012
The news about this sequencing and some of the conclusions drawn from it has proven to be a lot of fun and extremely interesting even to a layman like me. Technology and techniques are advancing so quickly that important findings are cropping up at a remarkable pace. We didn't even suspect that there were Denisovans until about 2008, and we didn't have good gene-based estimates for Neanderthal introgression until a short while later, and now we're comparing all these genomes with the promise of even more interesting findings to come. That's not to mention the findings of the dwarf Homo population of Flores, or the new Australopithecus finds like A. sediba. This has certainly been an exciting decade for the study of human origins.
Mike Elzinga · 1 September 2012
Richard B. Hoppe · 1 September 2012
Richard B. Hoppe · 1 September 2012
(Which reminds me of a remark by the late Robert B. Parker, creator of the Spenser, Jesse Stone, and Sunny Randall series of mysteries. Asked why he was taking boxing lessons in his 70s, Parker replied that he was in training for a geezer-weight title match.)
Mike Elzinga · 1 September 2012
John · 2 September 2012
I am amazed that Svante Paabo and his team were able to sequence the entire genome from that bone fragment. This is indeed - no pun intended - a stellar achievement. It's also important since it has demonstrated that our understanding of hominid phylogeny is far more complicated than we had suspected.
Loren Amacher · 2 September 2012
As more genetic information accumulates relating to our ancient antecedents, it seems that there is, in fact, something to the multiregional hypothesis, at least for genetic content for many modern humans. We still are, all of us, African in most part. Travelling to Asia, 80,000 ya, carried different opportunities than it does today!
MichaelJ · 2 September 2012
What gets me is that these were people. We know a fair amount of culture going back about 10k years but we know nothing about these guys. In the intervening 30k years think how many Gods were created and disappeared. How many stories of Heros real and imaginary have been lost to us. Were there any empires that we know nothing about over this time.
John · 3 September 2012
Just Bob · 3 September 2012
Richard B. Hoppe · 3 September 2012
The best media report of this research I've seen is in BusinessWeek.
Richard B. Hoppe · 3 September 2012
Now this is really interesting: the Denisovans have the same chromosome 2 fusion as H. saps. John Hawks discusses it briefly here. Assuming that Neandertals also have the fusion (which we do not yet know), that pushes the date of the fusion back before the differentiation of H. saps, Neandertals, and Denisovans.
harold · 3 September 2012
tomh · 3 September 2012
Robert Byers · 3 September 2012
its not the next best thing to being there.
Yes its about looking back in time to things not now that way.
All this genetic stuff still requires a constant state of motion on genetic change.
Yet is the physics of DNA settled?
I say it isn't.
The bible says people lived , even after the flood , for hundreds of years.
So our genetics must of been more powerful. Likewise in all biology.
So YEC creationists already can't be persuaded that Dna is a trail for biological relationships.
Whether diversity of time.
All ideas on genetics is founded on a constant state.
There is no reason to rule out other options about flexibility of genetic change.
Evolutionists make a flaw of logic when saying genetic conclusions about biology can not be questioned on the great assumption of constant motion.
Its not been included in these models the option for undiscovered flexibility of genetic change without ideas from evolution.
It must include this option to be a tested hypothesis.
Another whoops for evolutionary biology.
Just Bob · 3 September 2012
Robert,
I won't even attempt to argue with your statements above. They speak for themselves.
But let me help you with a couple of things that maybe you could learn to correct, if you pay attention and are careful (I taught high school English).
Start your sentences with capital letters.
It's not 'must of', it's 'must HAVE'. 'Must of' doesn't even make sense.
When 'its' means 'it is', it always MUST have an apostrophe: it's. You did it wrong three times in that short paragraph.
Avoiding some of those childish errors (and there are many more) won't help your argument, but it will make readers less likely to dismiss your entry, after the first sentence, as the writing of a 5th grader.
DS · 3 September 2012
Still spelling DNA with only one capital eh Robert? Well then, I guess everyone can see what an expert you are when you claim that the physics of Dna is not settled!! Perhaps you can enlighten us about exactly what is is you feel is still in question. Is it the mechanism of mutations? Is it the mutation rate? Is it the randomness of mutations?
Exactly how do you explain this evidence Robert? How can it possibly be reconciled with a young earth and immutable species? You make a flaw of logic when you say that others have ruled out undiscovered things. Exactly what undiscovered things should be considered? Why should they be considered if they haven't been discovered yet? Could it be that you will just reject any conclusion that doesn't agree with your preconceptions?
Dave Luckett · 3 September 2012
"So our genetics must have been more powerful."
More powerful than what? A lawnmower? A speeding locomotive? A Saturn V rocket?
Enquiring minds want to know, Robert. Not your mind, of course.
stevaroni · 3 September 2012
stevaroni · 3 September 2012
Scott F · 3 September 2012
rossum · 4 September 2012
Dave Luckett · 4 September 2012
Infant and childhood mortality were the real skews on the population statistics. A settled farming population with access to a good diet may live out what we would regard as a "normal" lifespan, with some respectable proportion of those who reach adulthood reaching sixty or seventy. Old people are repositories of knowledge in preliterate societies, and valuable for that reason, and so are usually supported past their ability to contribute with labour. At the same time, settlement removes the necessity for keeping up with the group as it forages. Hence the Biblical description of human life expectancy: "three score years and ten".
The difficulty arises with intensive cultivation of grain. Given suitable land, cereal crops return the greatest number of calories per area, albeit at the cost of constant grinding labour. Land is converted to cereal farming by ploughing, drainage, ditching, irrigation and terracing. Woodland, wetland and hill pasture, sources of other foods, are reduced. Malnutrition appears as grain replaces them. At the same time, repetition and overuse injuries appear and become severe. So do dental caries.
All this tends to shorten life, except among the elite. But an elite is also a characteristic of settled agrarian populations.
Ian Derthal · 4 September 2012
The problem I suppose is one of biblical inerrency. If the bible says early humans had life spans of 900 plus years then they did, even if there is no fossil evidence for this scanario.
No matter how silly the claim, if the bible says it then Robert believes it.
It's as simple as that.
TomS · 4 September 2012
Nearly everyone qualifies their belief in the primacy of the Bible. Very few people go along with Biblical heliocentrism, for example, even though for something like 2000 years it was the universal belief that the Sun orbited a fixed Earth, and agreed that the Bible said so. Most people today believe that the Earth is a planet of the Sun on the basis of modern science. (Even though few of them are able to give good reasons for that belief.) This is only one of the more striking examples of how people will qualify their trust in the Bible. (I dare say that the evidence for evolution is more accessible than the evidence for geocentrism.)
Dave Luckett · 4 September 2012
I'd agree with TomS. Even the godbots we get here don't actually believe in Biblical inerrancy, not really. They say they do, of course, but any time the Bible doesn't actually say what they want it to, they indulge in a little quiet metaphorisation, and hey presto!
And yes, to observe the retrograde motion of Venus and Mercury takes some doing, and a tremendous piece of insight to see how it is better explained by the Earth in motion rather than that it's them doing loop-the-loops.
harold · 4 September 2012
DS · 4 September 2012
fnxtr · 4 September 2012
Robert Byers · 4 September 2012
Robert Byers · 4 September 2012
John · 4 September 2012
bbennett1968 · 4 September 2012
Just Bob · 4 September 2012
Still can't get the must have and it's right, can you? See, it's evidence like that that confirms us in our judgment that you have some major learning problems, which we first assumed from your adherence to YEC.
And then "sentences" like "Our civilization if founded on the bible being true," make it painful to even attempt to sort out what you mean.
Robert, you're not doing your cause any good by posting here. Indeed, you're harming it.
phhht · 4 September 2012
DS · 4 September 2012
j. biggs · 4 September 2012
j. biggs · 4 September 2012
sorry, I meant stevaroni. My bad.
Marilyn · 4 September 2012
"How come no one can detect one at all"
You have to be very thick skinned not to detect God.
Just Bob · 4 September 2012
stevaroni · 4 September 2012
stevaroni · 4 September 2012
j. biggs · 4 September 2012
Marilyn · 4 September 2012
"Umm, OK, how do you do it?"
It's not limited. It's inbuilt. And believe, "when two or three are gathered in my name I will be there", is one way.
Richard B. Hoppe · 4 September 2012
stevaroni · 4 September 2012
stevaroni · 4 September 2012
fnxtr · 4 September 2012
phhht · 4 September 2012
Just Bob · 4 September 2012
Marilyn · 4 September 2012
"How come no god detectors?"
Yes it seems He got passed you without been noticed.
stevaroni · 4 September 2012
prongs · 4 September 2012
So if Carbon-14 dating is all just, you know, miscalibrated, why don't Creationists perform their own calibration of C-14 and give us their TRUE ages for all of those C-14 dates?
The Denisova Cave, the Egyptian timbers inside tombs, all that good stuff - why don't they just tell us HOW OLD IT REALLY IS?
I thought they said they were 'scientists'? Can't they do some real, you know, 'science' and recalibrate all those C-14 dates.
And while they're at it, why not give us their 'properly' calibrations for Potassium-Argon dating, Lead-lead dating, Uranium-uranium dating, all those radioactive datings, and DENDROCHRONOLOGY, and VARVES, while they're at it?
What is wrong with these 'scientists', like Michael Oard (meteorology)? They could win a Nobel Prize when they show all those dating methods are wrong.
But only if they give their 'right' dates.
Tenncrain · 4 September 2012
phhht · 4 September 2012
Just Bob · 4 September 2012
Pssst, Marilyn, it's "past", not "passed". "Passed" is what you did with that gas last night.
phhht · 4 September 2012
Just Bob · 4 September 2012
And Marilyn, while you're busy ignoring my literal explication of your bible verse, here's something else that I suspect you'll choose not to answer.
What EXACTLY does "gathered in Jesus' name" mean?
If any group declares that it is meeting "in Jesus' name", is it really, or are some groups claiming it but not really doing it? How about the White CHRISTIAN Knights of the Ku Klux Klan? They gather in Jesus' name? Does Jesus attend their rallies? How about the white supremacist Christian Identity churches? The Westboro Baptists when they gather in Jesus' name to tell grieving relatives that their dead children in the US military are going to hell because America doesn't persecute gays nearly enough to satisfy Jesus?
I'm sure that you're sure that Jesus is present for your Sunday services and bible study. But do you think He attends Catholic mass? Russian Orthodox services? Mormon ceremonies? Secret Masonic meetings? A liberal Methodist church that welcomes gays?
And what does Jesus' presence contribute to the affair? Does His presence guarantee that the group always makes correct decisions? Does their behavior noticeably change when He shows up? Can members tell when and if He leaves? Does He manipulate the minds of those present to get them to do what He wants? Does He always get a majority for His way? Why isn't it always unanimous?
https://me.yahoo.com/a/KirCgV93wJhLm65myiH0mSwTlWCQuwnMxlI4xKqx#26847 · 4 September 2012
two or more what? does frank and the beans count? if so i got that mug on autopilot we like xylem and phloem and shit namsayin
Henry J · 4 September 2012
fnxtr · 4 September 2012
Marilyn · 5 September 2012
Mike Elzinga · 5 September 2012
Some time back I gave some specifications for a deity detector.
Took me a while to find them again.
Dave Lovell · 5 September 2012
Marilyn · 5 September 2012
"While some of the coverage has focused on what can be inferred about the individual from whom the DNA was recovered (female, dark skin, brown eyes and hair) what is much more interesting are the relationships of the Denisovans to various modern human populations and to Neanderthals"
Would you detect how they believed and lived their life or how they viewed things from their DNA. Would that be done by any writings they did or how they lived their lives and art they did, things that came from inside the individual. Also emotions like anger or love.
Dave Lovell · 5 September 2012
TomS · 5 September 2012
eric · 5 September 2012
Marilyn,
RBH's quote should probably be read as 'the genetic relationships between Denisovans, Neanderthals, and modern humans are much more interesting than traits like eye color.'
IOW, "relationship" is being used here in the sense of how they interbred, not in the sense of what sort of social values they shared or social interactions they had.
j. biggs · 5 September 2012
Robin · 5 September 2012
SLC · 5 September 2012
SLC · 5 September 2012
Rolf · 5 September 2012
Marilyn, Moses made an attempt and got only the cryptic reply of I AM THAT I AM.
You tell us what that means, your detector shows it?
phhht · 5 September 2012
stevaroni · 5 September 2012
John · 5 September 2012
Marilyn · 5 September 2012
I've thought about it and have to say I cannot answer your questions.
https://www.google.com/accounts/o8/id?id=AItOawkWCfqq_fzPq0Wg6oR3i1Q5_WQtE1SgWuw · 5 September 2012
Marilyn,
How do you know you're not fooling yourself?
Minority_Report · 5 September 2012
Now that we know Denisovan had 46 chromosomes, it is implied (though not yet expressed) that they had the distinct human genes PGML/FOXD/CBWD from human chromosome 2.
Therefore the only way those guys received these genes is from the first mating in our ancestry of 46 with 46. Therefore we know that the hominids were hybrids of humans and apes, with Denisovan and Neanderthal the last in that sequence. They were exterminated in the Great Fossilization following Genesis 6:12.
John · 5 September 2012
Robert Byers · 5 September 2012
Robert Byers · 5 September 2012
stevaroni · 6 September 2012
j. biggs · 6 September 2012
eric · 6 September 2012
stevaroni · 6 September 2012
DS · 6 September 2012
Robert Byers · 6 September 2012
Robert Byers · 6 September 2012
Dave Luckett · 7 September 2012
Byers thinks that teeth can be biologically stronger, whatever Byers means by "stronger". Not that 'stronger' has any specific meaning at all in this context.
No, Bob. Wrong again. The teeth of ancient skulls have been minutely examined, and as has been explained patiently to you, those teeth are like ours, not "stronger". Their tooth enamel was the same as ours, and its thickness the same as ours would be, if we ate the same foods as they did. The wear patterns show that people five, six, seven thousand years ago lived shorter, not longer lives than we do.
Them's the facts, Bob. Suck it up.
apokryltaros · 7 September 2012
Furthermore, Robert Byers still has not explained why no one has ever found any skull belonging to one of these legendary Biblical poly-centurions in the first place.
stevaroni · 7 September 2012
DS · 7 September 2012
Hell he can't even click on the links that are provided for him. His nonsense is completely refuted by even the most trivial facts. He seems to think that if he refuses to look at it, it doesn't exist. Kind of like a three year old playing hide and seek by covering his eyes.
The ice man lived 5300 years ago and died at the age of 40. His teeth were in really bad shape. He was no pre flood super human, that's for sure. Bobby can't explain it. So what? He can't explain any of the evidence from genetics either.
Marilyn · 5 October 2012
eric · 5 October 2012
Henry J · 5 October 2012