Belated Happy 271st Birthday, Jean Baptiste Pierre Antoine de Monet!
Who? The Chevalier de Lamarck, that's who. Born 1 August 1744, he was the first evolutionary biologist who gave a mechanism that could, in principle, explain adaptation. Even though his mechanism was wrong, he was a true pioneer and a great biologist.
(I'll leave this post short, so as not to push Matt's photo contest off the page).
78 Comments
https://me.yahoo.com/a/JxVN0eQFqtmgoY7wC1cZM44ET_iAanxHQmLgYgX_Zhn8#57cad · 5 August 2015
I suppose that Monet felt the need to explain why there are water-lilies.
Or not.
Glen Davidson
justawriter · 5 August 2015
It is a shame that in the storybook version of history good scientists are denigrated for being wrong when their work did advance their field of study. It's a good thing Darwin never floated pangenesis without his theory of evolution, otherwise he might be remembered just a guy with a goofy idea who did some good work on coral reefs and barnacles.
"Give me the fruitful error any time, full of seeds, bursting with its own corrections. You can keep your sterile truth for yourself." - Pareto
(Note this does not apply to members of the Discovery Institute or the Creation Museum, who work tirelessly to create sterile errors.)
dick · 5 August 2015
He also contributed to the development of the concept of deep time, a very hard to comprehend concept in his time (ours too?).
Joe Felsenstein · 5 August 2015
Lamarck's "use and disuse" mechanism was wrong. Inheritance of acquired characters was wrong but was not initiated by him -- everyone believed it. It is sad that Lamarck has so frequently been considered a crank. He was a great figure of invertebrate biology, an advocate of evolution, and pioneer of a mechanism that could in principle explain adaptation, if it worked at all.
As for deep time, its time had come in the 1700s and his predecessor and patron Buffon had experiments done on how quickly a hot planet would cool, using different size metal spheres. The issue was in the air.
I came across a tale that he met Napoleon, who misunderstood what Lamarck's book Philosophie Zoologique was about, lectured Lamarck about how we needed experiment and observation, not philosophizing. In the tale, Lamarck was reduced nearly to tears. Napoleon was just trying to show off how well he understood biology, by basically being an asshole. Here is a 1920s painting imagining that by the Russian artist Ezuchevsky. There seems to be some uncertainty as to whether this happened.
Robert Byers · 5 August 2015
If inheritance of acquired characters is wrong then how is the common characters that affect so many domesticated, unrelated, creatures??
I'm not saying they are acquired BUT it seems there must be other mechanisms for important bio change unrelated to selection on mutations or simple selection.
If floppy ear dogs was not selected for then there must be another reason for why its common.
So the principal behind Lamarck of innate mechanisms to explain biology change is not wrong.
Its modern evolutionary ideas that are wrong in excluding other mechanisms. Its all wrong anyways but I'm making a point based on obvious bio results.
eric · 5 August 2015
Mike Elzinga · 5 August 2015
Everybody knows that you get floppy-eared dogs by lifting them by the ears; as former President Lyndon B. Johnson demonstrated. It works especially well with beagles.
TomS · 5 August 2015
Michael Fugate · 5 August 2015
Robert, have you ever tried reading something on domestication of dogs? I thought not.
Joe Felsenstein · 6 August 2015
Dave Luckett · 6 August 2015
It reminds me of a story from publishing. Publishers are notoriously low-profit, and there's always a corporation thinks they can improve their profitability, so the often change hands. When that happens, the new owners send in the management consultants, who analyze everything out the wazoo, and always the same conversation results:
Management consultants: Now, we've found that you make about ninety per cent of your profitable sales from twenty per cent of the titles you publish.
Editors: Uh huh.
MCs: So what you have to do is only publish titles that will make that profit margin.
Editors: And how do we predict what titles that will be?
MC's: Well, obviously, you have to do market surveys to find out what the customers want.
Editors: We do. (points wearily to a stack of statistics)
MC's: So what's the problem, then?
Editors: If we use every measure we can get, we get about eighty percent of our profits made by twenty percent of our titles. If we don't, we get about eighty percent of our profits made by eighteen percent of our titles. You're the consultants. You figure it out.
SLC · 6 August 2015
Matt Young · 6 August 2015
Robert Byers · 7 August 2015
richard09 · 7 August 2015
oo oo I know. I bet it has something to do with those gene thingies!
harold · 7 August 2015
Henry J · 7 August 2015
Re "Different versions of the same gene are called âallelesâ. When they are on the same chromosome, they may travel together."
Minor detail, but isn't that different genes, not different alleles of the same gene?
DS · 7 August 2015
Henry J · 7 August 2015
He won't do either.
Robert Byers · 7 August 2015
eric · 8 August 2015
Malcolm · 8 August 2015
harold · 8 August 2015
harold · 8 August 2015
Robert Byers · 8 August 2015
Robert Byers · 8 August 2015
stevaroni · 9 August 2015
harold · 9 August 2015
Just Bob · 9 August 2015
"Not even the most extreme creationist argues that chihuahuas and great Danes were created âin their present formâ by a deity."
Don't be too sure. Remember with whom you're conversing.
Matt Young · 9 August 2015
Henry J · 9 August 2015
Is that riddle talking about dogs, or people from Chihuahua and Denmark?
Matt Young · 9 August 2015
Henry J · 9 August 2015
Wait a minute, maybe the small one was the preacher (or other officiator) rather than being one of the couple?
Just Bob · 9 August 2015
Just Bob · 9 August 2015
Robert Byers · 10 August 2015
DS · 10 August 2015
Commence to writin booby. By the way, you will have to do a literature search first and you really should read all of the relevant literature. When you do you might change your mind about spouting off about things you know nothing about. Maybe not. I'm sure we are all looking forward to seeing the evidence for your imaginary process. You do have evidence, right? You just refuse to show it until you publish, right? It all comes down to raw facts. We have dozens of complete genome sequences, you got only your imagination. Good luck with that. Crying that it ain't biological or it's atomic isn't going to cut it.
Henry J · 10 August 2015
Re "It all comes down to raw facts."
And all of his facts are cooked.
Matt Young · 10 August 2015
What interests me the most about Mr. Byers, to the extent that I can follow his arguments, is that he proposes no mechanism for "atrophy" - it just happens. Odd, isn't it, that the eyes of cave fish atrophy, or that wings of birds atrophy when there are no natural enemies? Or that "wildness" atrophies only in domesticated animals? Why all this atrophy? How does it happen? Is there no mechanism? It just happens? How odd!
DS · 10 August 2015
Mike Elzinga · 10 August 2015
eric · 10 August 2015
Mike Elzinga · 10 August 2015
Robert Byers · 10 August 2015
DS · 10 August 2015
Really booby? You don't know what the mechanism is. Really? And here you were going to publish a scientific paper on it. So you have no biological evidence. Hell, you have no evidence of any kind. You are justt spitting into the wind. Read the papers I provided. Then you will see how wrong you are. Whole genome sequencing is biological evidence. It is the quintessential biological evidence. You are blinded to the evidence, can't even admit that it exists.
Anyway, since you have no mechanism, you have no scientific explanation. All you have is your personal incredulity, which is worthless if you ignore the evidence. Your uninformed and ignorant opinion deserves nothing but ridicule. Go ahead, prove me wrong, read the papers and explain the pattern observed. Or just keep blubbering about how it doesn't meet your idiotic definition of biological. Yea, that should be good for another laugh or two.
Robert Byers · 10 August 2015
DS · 10 August 2015
Here you go Bobby boy. From Nature Communications (2013):
The genetic bases of demographic changes and artificial selection underlying domestication are of great interest in evolutionary biology. Here we perform whole-genome sequencing of multiple grey wolves, Chinese indigenous dogs and dogs of diverse breeds. Demographic analysis show that the split between wolves and Chinese indigenous dogs occurred 32,000 years ago and that the subsequent bottlenecks were mild. Therefore, dogs may have been under human selection over a much longer time than previously concluded, based on molecular data, perhaps by initially scavenging with humans. Population genetic analysis identifies a list of genes under positive selection during domestication, which overlaps extensively with the corresponding list of positively selected genes in humans. Parallel evolution is most apparent in genes for digestion and metabolism, neurological process and cancer. Our study, for the first time, draws together humans and dogs in their recent genomic evolution.
So you see booby, we not only know the selection pressures involved, we also know the genes involved as well. Go ahead booby, try to explain this away. Is it too atomic for you? Is it not biological enough for you? Exactly why should anyone pay any attention to your idiosyncratic definitions anyway?
And you still haven admitted that you were wrong about the Thylacine. What's the matter, dog got your tongue?
phhht · 10 August 2015
Malcolm · 11 August 2015
Just Bob · 11 August 2015
I was always amused at fundy high school kids who "knew" more biology than biologists, more physics than physicists, more geology than geologists, etc. This is a new level of amusement -- dare I say, hilarity -- a fundy YEC who "knows" that no biologist knows what biology is! Only HE knows, but can't seem to tell us.
Mike Elzinga · 11 August 2015
TomS · 11 August 2015
eric · 11 August 2015
Mike Elzinga · 11 August 2015
Just Bob · 11 August 2015
Mike Elzinga · 11 August 2015
Henry J · 11 August 2015
Although, if the made-up stuff is accusing somebody (or a group of somebodies) of negligence in their profession, that sounds to me like a base of bearing false witness.
Joe Felsenstein · 11 August 2015
Mike Elzinga · 11 August 2015
Henry J · 11 August 2015
Re "Atrophy does tend to happen when selection is relaxed. It is generally thought to result from two mechanisms"
Just those two? My first thought was if a feature takes a lot of resources to build or maintain, then dropping it would free up those resources for other things.
Joe Felsenstein · 11 August 2015
John Harshman · 11 August 2015
(4) Positive selection for reduced features. Wings just get in the way of foot-propelled divers, so absent the need for flight it's advantageous for flightless cormorants to reduce them. Legs get in the way for predators that chase small prey into burrows, hence snakes; Eyes are convenient entries for pathogens, so absent a need they tend to get covered with skin; and so on.
Robert Byers · 12 August 2015
Robert Byers · 12 August 2015
Robert Byers · 12 August 2015
Joe Felsenstein · 12 August 2015
eric · 12 August 2015
eric · 12 August 2015
Matt Young · 12 August 2015
harold · 12 August 2015
Robert Byers · 13 August 2015
Robert Byers · 13 August 2015
Malcolm · 13 August 2015
Henry J · 13 August 2015
So it's educated speculation, in contrast to the science denier's idol speculation?
Yardbird · 21 August 2015
Another recent study indicates that Lamarck's ideas might not be completely off. Previous studies showed an effect of famine on subsequent generations. A new one shows the transgenerational effect of trauma.
harold · 22 August 2015
Joe Felsenstein · 22 August 2015
Yardbird · 22 August 2015