They can’t find any genetic basis for the change so there is NO NEW GENETIC INFORMATION.
What are you basing this on? As far as I am aware, they did not sequence the nuclear genome of the lizards, only the mitochondrial genomes. It was the
mitochondrial genomes that were found to be the same. If you can find a link from an authoritative source saying that the nuclear genome was also sequenced and found to be identical to that of the ancestral population from other islands, please do share it.
It was just an enlargement of muscles in the valve between small and large intestine that was already there.
Which provided a new function: fermentation of food to allow it to digest more thoroughly. Modification of existing body parts to perform new functions is a very big part of evolution. Evolution does not propose the creation of new traits out of nowhere: they result from the modification of existing traits and genes. Here is an excerpt from
a paper about the lizards' evolution:
This shift to a predominantly plant-based diet has resulted in the dramatic evolution of intestinal morphology. Morphological analysis of preserved specimens shows the presence of cecal valves (
Fig. 4) in all individuals, including a hatchling (26.4-mm snout-vent length, umbilical scar present) and a very young juvenile (33.11-mm snout-vent length) examined from Pod Mrčaru. These valves are similar in overall appearance and structure to those found in herbivorous lacertid, agamid, and iguanid lizards (
13,
14) and are not found in other populations of
P. sicula (
13) or in
P. melisellensis. Cecal valves slow down food passage and provide for fermenting chambers, allowing commensal microorganisms to convert cellulose to volatile fatty acids (
15,
16). Indeed, in the lizards from Pod Mrčaru, nematodes were common in the hindgut but absent from individuals from Pod Kopište. The fact that <1% of all currently known species of squamates have cecal valves (
13,
14) illustrates the unusual nature of these structures in this population.
The Italian wall lizard also demonstrates the observable evolution of (1) symbiosis (the evolution of the cecal valve allowed microorganisms to populate the digestive tract and break down cellulose for the lizard to use as fuel), and (2) the improvement of existing traits (increase in head size and bite strength). Interestingly, you keep talking about the 2nd law of thermodynamics like it always makes things worse over time and causes them to break down. Yet it is observably true that these lizards have improved bite strength over their ancestors. Obviously, the 2nd LoT doesn't prevent evolution from making improvements.
The same thing as the E.coli feeding on glucose in an aerobic environment but after consuming all the glucose they started to eat citrate to survive, and the same thing happened; they can’t find any genetic basis for the change so there is NO NEW GENETIC INFORMATION.
Did you even read the link I posted earlier? The link
did say that they found "the genetic basis for the change". Here is an excerpt from the first paragraph of
the link:
We previously described the evolution of a novel trait, aerobic citrate utilization (Cit+), in an experimental population of Escherichia coli. Here we analyze genome sequences to investigate the history and genetic basis of this trait.
Did you not even read the first paragraph? The paper says that genes in the Cit+ population had mutations that the Cit- population did not have. Without these mutations, they cannot metabolize citrate aerobically. The mutations are indeed responsible for this new capability.
The local lizards disappeared overtaken by the introduced lizards and if you read Lenski’s E.coli the same thing happened after E.coli started the citrate diet, they became strong and all those E.coli feeding on glucose with the same mechanism disappeared also. No new genetic information on both.
First of all, there were no local Italian wall lizards on the island that they were introduced to for the experiment. Secondly, I've already explained that the genetic basis for the change in the E.coli was found.
If you take a group of skinny malnourish people from a starving country and bring them to a country that is rich in food and nutrients, and leave them there for 100 years, they will change in appearance too, and just like the lizards, you won’t see a trace of them from the time they came into that country that is rich in food and nutrients after 100 hundred years. Did they gain any NEW GENETIC INFORMATION? NO, because the mechanism was there already and it’s just a matter of exercising that mechanism.
Which is not the same thing as the E.coli experiment because they
did find the genetic changes which facilitated aerobic citrate metabolism. The mechanism was not "there already". If it was, then the Cit- E.coli would haven been able to metabolize citrate aerobically just like the Cit+ could. But they could not, despite being raised in the exact same environment. The mutant genes responsible for this were found and were not present in Cit- bacteria. A new gene called the
rnk-citT module was found to be responsible for the initial ability for aerobic citrate metabolism in the evolved strains and further mutations resulted in improvement of the strains' ability to metabolize citrate aerobically. So we not only have an observable example of a new gene which allowed the E.coli to do something it could not do before, but also mutations which improved that ability.
If you a have a manual four speed four-wheel drive and drive it only on rough mountains or very rough countries in a low range mode most of the time, you won’t be able to use all the gears because the most you could use in that mode is up to the 2ND gear only at slow speed, [I’m talking about a 67’ Land Rover series 2A] but that doesn’t mean you don’t have the 3RD and the 4TH gear mechanisms.
Now, when you hit the pave road for the first time, not in a low range mode anymore but in high range mode, you would be able to use the 3rd gear and the 4TH gear mechanisms.
Now, think of each GEAR as NEW INFORMATION AND NEW MECHANISM.
Did you go to a mechanic, before you hit the pave road, and ADD THE TWO NEW GEARS INTO YOUR TRANSMISSION?
NO, because the mechanisms, i.e., the 3rd gear and the 4th gear, were always there, it just wasn’t use.
IOW, NO NEW GEARS, NO NEW MECHANISM AND NO NEW INFORMATION.
Except that the old E.coli strains didn't have the "3rd and 4th gear" for metabolizing citrate aerobically because they do not have the mk-citT module or the other mutations which refined its abilities. This is confirmed by genetic tests. Please read the paper.
We are talking about E.coli eating glucose and citrate as food and human as regular food and lactose. You can’t feed E.coli and human with rocks and rocks is never categorized as food to both. One could eat organic soil to cure crohn’s disease but never rocks.
It was to refute your claim that a population can adapt to a new food because it "needs" to. Evolution doesn't think and plan like that. It doesn't say, "hmm, there's nothing to eat but lactose, so I'd better evolve a way to digest that".
I am positive. Animals could not have evolved from a
modern bacterium.
Several types of
E. coliexist as part of the normal flora of the human gut and have many beneficial functions, such as the production of
vitaminK2. They also prevent harmful bacteria, known as pathogenic bacteria, from establishing themselves in the intestine.
Which has nothing at all to do with whether they are the ancestors of any animals or not.
There is no bait and switch here: evolution does not act on individuals, it acts on populations. Evolutionary theory does not say that
a fish can turn into
an amphibian or anything else.
How can you support macroevolution when you can’t even find the missing links or “transitional forms” to support this baseless theory.
Darwin said, “Why do we not find them embedded in countless numbers in the crust of the earth?” So, the assumption is, we should find “transitional forms” in “countless numbers” but there is a problem according to Darwin and he explained it in the next chapter, i.e., Chapter 9 - On the Imperfection of the Geological Record
“Darwin addresses the fact that his theory of natural selection is not supported by findings in the geological (or fossil) record. If Darwin’s theory of natural selection were true, paleontologists studying fossils should be able to find intermediate links between existing species and their parent forms throughout the geological record. Unfortunately, those intermediate links have rarely been found. To refute his theory’s critics, Darwin argues that the geological record is imperfect.”
“Darwin argues that because the earth has existed for an unfathomable number of years, based on his good friend Charles Lyell’s Principles of Geology, the number of changes that have taken place on its surface, including the number of species that have formed, flourished, and eventually become extinct, is infinite compared to the paltry holdings of fossils at geological museums.”
IOW, the only way Darwin could explain his theory on “why do we not find them embedded in countless numbers in the crust of the earth?” is to make another theory on why do we not find them, and that is because of “the Imperfection of the Geological Record” based on Charles Lyell’s Principles of Geology.
“Darwin argues that the physical makeup of the earth’s surface is constantly in flux.”
A whole lot of fossils have been found since Darwin's day. Just take a look at all of the hominid ancestors for one. As you go further back in the fossil record, their brain cases become smaller and their physical characteristics become more like non-human apes. You have Homo erectus (70,000-1.9 million years ago), which is very much like modern man but with a smaller cranial capacity (850-1,100 cc vs 1,350-1,400 cc for modern humans). Before that, you have Homo habilis (1.5-2.8 million years ago) with a cranial capacity of only 550-687 cc. Australopithecus (2-4 million years ago) was much like a chimpanzee in cranial capacity (438-452 cc) but had a pelvis much more similar to that of a human. There are plenty of other primitive hominid types known besides these. Other than these, we have found quite a few transitional forms in the fossil record: turtles with half-formed shells, whales with both teeth and baleen, birds with teeth and bony tails, early therapsids with traits between reptiles and mammals, etc.
So we could avoid misunderstanding in the future; tell me Darwin’s view of evolution; Was it from inorganic to organic to fish to amphibian to reptile to mammal?
No, it was from the first prokaryotes to the first eukaryotes to the first colonial organisms to the first truly multicellular invertebrates to the first notochord-bearing invertebrates to the first true vertebrates like fish to the first amphibians to the first reptiles to the first therapsids to the first mammals, etc.
Also, I see that you conveniently left out any addressing of the nylon-digesting Flavobacterium I mentioned. At least three different genes have been found to be responsible for this ability, each one performing its own function in the step-by-step process of the breaking down of man-made nylon polymers. Nylon doesn't exist in nature, as as such these genes could not have "already been there". Interestingly, this has been replicated in the laboratory: scientists were able to witness the evolution of a strain of Pseudomonas that was also capable of digesting nylon.