Did humans descend from other primates?otseng wrote: Man did not descend from the primates.
Are humans primates or should there be special biological taxonomy for humanity?
Please cite evidence.
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Did humans descend from other primates?otseng wrote: Man did not descend from the primates.
This characterization only holds with respect to viral behavior. As has been previously pointed out, spawning actively infectious retroviruses isn't good for survival. However, loss of viral activity has no bearing on whether natural selection jury-rigs an ERV for host-beneficial functions after it is in the host genome. Conversely, some ERVs contain viral genes which are not completely inactivated and can promote retrovirus-related diseases such as cancer[1] and MS.[2]otseng wrote:Is it not originally assumed that ERV is assumed to not have a function? That they just "sit quietly"?
1% versus 8% is a bit of a non sequitur. More sequence information was processed between 2000 (1%) and 2004 (8%), leading to more identified ERV sequences.Also, ERV was considered to be a small part of the genome, around 1%.
"In humans, endogenous retroviruses occupy about 1% of the genome, in total constituting ~30,000 different retroviruses embedded in each person's genomic DNA."
http://www.talkorigins.org/faqs/comdesc ... troviruses
However, the number discovered is now closer to 8%.
"There are many thousands of endogenous retroviruses within human DNA (HERVs comprise nearly 8% of the human genome, with 98,000 elements and fragments[9]). All appear to be defective, containing nonsense mutations or major deletions, and cannot produce infectious virus particles."
http://en.wikipedia.org/wiki/Endogenous ... troviruses
How did 8% of the genome originate from mistakes from viruses? This is more problematic if most of these are found to have a function.
See the above regarding function. Again, why is it either-or? Why do they all need to be completely functionless? I'll make my own prediction, though it may be a while before I can dig up the relevant papers: ERV sequences shared by all primates, all mammals, etc. (and therefore thought to have been acquired by a distant ancestor) will be more likely (on average) to have host functions than ERVs shared by only great apes or those found only in humans (or recently acquired ERVs in any other genus/species). Why: Mutation and natural selection will have had more time to co-opt old ERVs than those incorporated only recently.Also, the prediction that I mentioned before is that we will continue to find functions for ERV and that they will not all just be considered "defective" and "containing nonsense mutations". However, if they are all indeed found to be completely functionless, it would make more sense that it is an inactive remnant from an ancestor.
More on this below...If ERV is indeed functionless, yes, what you stated would make sense.GrumpyMrGruff wrote:Stating this more strongly, comparative genomics would falsify the concept of species descent/modification if resampling different traits (different genes, ERVs, etc.) inferred the same tree no more frequently than when using randomized data. In other words, all noise and no signal would be evidence against shared ancestry.
However, as for actual fossil evidence of a common ancestor, it is lacking. As for genetic similarities, if species share morphological similarities, it would make sense that they also share genetic similarities.GrumpyMrGruff wrote:The preponderance of genomic sequence data (including ERVs), mtDNA sequence data, karyotypic evidence, and fossil distribution are consistent with a single ancestral tree.
I was referring to (and Goat was responding to) post #40 where the 'common to primates' part may've been implied, but it wasn't stated. We read too literally. No biggie.I do not believe I said that. I did state: "How about if I find an ERV common to primates (including chimps), but not found in humans?"
True, but within the patterns of isolated HERV acquisition one sees primate evolution writ small. When a lineage of humans shares a unique ERV at a particular genomic position, that ERV shows the same pattern of inactivation across the isolated breeding population. Some human-only ERVs were acquired on the course of the human migrations. Their unique mutations show the same patterns of hierarchical organization among descendant human lineages that we see writ large across ERVs of the great ape genomes.If there are ERV differences in humans, it would not show that humans evolved. It would only either show that a virus infected a certain group or that there would be differences in genotype/phenotype in populations.GrumpyMrGruff wrote:Incidentally, this seems at odds with your earlier claim that the host-specific functions of some ERVs imply their design. Different human populations have different total numbers of ERVs. While we all have some ERVs in common (including those inherited from our common ancestor), various reproductively isolated human populations have accumulated different ERVs at different positions in their genomes. Just as inter-species ERV distributions make sense in light of evolution, this pattern makes sense in light of virology and population genetics... but not in light of your assertion that ERVs were specifically engineered in the genome. If they're designed to serve a purpose, why do some human populations need different types and numbers of ERVs? Did the Designer continue to tinker after Adam and Eve?
That depends on one's perspective. Given a once celled animal is composed of x atoms, I can think of far more complex structures of human origin.sinebender wrote: The problem is that even a one-celled organism turns out to be far more complex than anything which man has yet built.
This doesn't take into account that these one celled animals are likely products of previous evolutionary steps, and that these modifications may be occurring simultaneously.sinebender wrote: The odds against even the simplest parts of a one-celled animal arising via chance are known to be far beyond astronomical.
Of course, no available amount of time would suffice for trying to overcome those kinds of odds, least of all the piddling four billion years which evolutionists claim as an age of the Earth. You're still looking for an event with odds like 1 to ten to the 167,887 power EVERY YEAR for a billion years, assuming one-celled animals are supposed to have arisen in a billion years.
Gross misunderstanding of evolutionary theory.sinebender wrote: That's assuming a cell might have developed ala evolutionism over a billion year time span without being destroyed by outside forces as Struss notes. Realistically, the cell would probably have to completely form from scratch in less than one day.
Proteins are very unlikely to become fossilized, given their soft composition.sinebender wrote: Aside from the impossible odds, there is another problem just as bad. All versions of abiogenesis require a "pre-biotic soup", a rich amalgam of the major kinds of building blocks required for living cells in the ancient oceans of the world. Such a concentrations of proteins etc. would leave traces in the rocks of those oceans; unfortunately for the evolutionists of which there is no evidence.
Only to those who lack understanding of evolutionary theory. No credible biologist proposes one celled biotics were the first step.sinebender wrote: Why do people still believe in evolution when it was disproven over 140 years ago by Louis Pasteur. Pasteur proved that life comes from life, life cannot come from nonlife. Omne vivum e vivo. Evolution requires spontaneous generation in order to have the “first cell�.
It amuses me when theists argue against "spontaneous generation" - when that is exactly what they propose occurs with their god.sinebender wrote: Like Pasteur said in Sorbonne, Paris (1864): “It is dumb, dumb since these experiments were begun several years ago…Never will the doctrine of spontaneous generation recover from the mortal blow of this simple experiment! “No, there is now no circumstances in which it could be affirmed that microscopic beings come into the world without germs, without parents, similar to themselves.�
I object to this slur, and find your use of it typical of those who don't understand evolutionary theory - regardless of that theory's accuracy.sinebender wrote: ...the evolutionist just chooses to believe in what they know to be impossible.
Incomplete data may produce incomplete conclusions.sinebender wrote: The reason that germs become resistant to antibiotics is that they loose DNA and thereby loose what the antibiotic reacted with. This can be by loosing a pump in the cell wall, change a control gene, or loose the enzyme the antibiotic attacked.
Has nothing to do with the subject, numerology is not science.The golden section
And then the lead turns into gold.I think the evidence you are looking for is the mathematics, the golden triangle, the fibonacci number sequence in how it applied to the human body. Evidence of design.
You find other fossils all the way back to single cells. There are gaps, but there are also detailed lineages, it's like a long film movie that someone ran over with a lawn mower, if you examine each clip it will give a bit of information about the whole, given enough clips and enough study the clips can be arranged in an order that gives you an idea about what the film was about. Fossils are the clips, the history of life is the movie. The movie can be understood even if not all the frames are recovered(not every fossil is recovered, not every species has an unbroken line of recovered fossils(yet).If you follow the fossils backwards, you find nothing.
This is just false. Whether by ignorance or intent it is actively promoted by Creationists and is complete garbage as science...there are no intermediate fossils. there are no transitional fossils.
Stephen GouldRecent articles have Steven J gould(sic) still looking for the hopeful monster.
Even if it is shown, it would be simply explained as a deletion in the chimp line.Goat wrote:you have to show that ERV is in other great apes but not in chimps.. that has not been shown to be true.
OK, let's look at the list of supposed human ancestors...You made a claim 'We don't know what the human ancestors were', I just gave you the list of the human ancestors. That is the human LINEAGE. You said we don't know, I just showed we do.What exactly are you claiming with this list of hominids?At the risk of repeating ad infinitum, here are the list of homo sapien predecessors
Australopithecus robustus
Australopithecus boisei
Homo habilis
Homo georgicus
Homo erectus
Homo ergaster
Homo antecessor
Homo heidelbergensis
Homo sapiens sapiens
http://www.trussel.com/prehist/news195.htmThe pair, named Orpheus and Eurydice after the Greek mythological lovers, are 1.5 million to 2 million years old and have been identified as Paranthropus robustus, a hominid line that went extinct about 1 million years ago.
"They are not direct ancestors of modern humans but are more like 'kissing cousins' of our ancestors," Lee Berger said after a news conference, where the pair — discovered in 1994 but revealed only now — were put on public display for the first time.
http://www.amnh.org/exhibitions/permane ... umans6.phpThis species, Paranthropus robustus, seems to have died out leaving no descendants.
http://www.talkorigins.org/faqs/homs/sp ... tml#boiseiAustralopithecus aethiopicus, robustus and boisei are known as robust australopithecines, because their skulls in particular are more heavily built. They have never been serious candidates for being direct human ancestors.
http://en.wikipedia.org/wiki/Homo_habilisDebates continue over whether H. habilis is a direct human ancestor, and whether all of the known fossils are properly attributed to the species. However, in 2007, new findings suggest that the two species coexisted and may be separate lineages from a common ancestor instead of H. erectus being descended from H. habilis
http://www.timesonline.co.uk/tol/news/s ... 224912.eceMeave Leakey, of the Koobi Fora Research Project, who led the discovery team with her daughter, Louise Leakey, said: “Their co-existence makes it unlikely that Homo erectus evolved from Homo habilis. The fact that they stayed separate as individual species for a long time suggests that they had their own ecological niche, thus avoiding direct competition.�
http://www.archaeologyinfo.com/homoerectus.htmThe dates for erectus have become earlier and earlier, while habilis remains have been found in later and later deposits, making a lineage involving habilis ancestral to erectus increasingly unlikely.
http://www.macroevolution.net/homo-georgicus.htmlit has been suggested that Homo georgicus represents a link between the two (with an age of about 1.8 million years, the remains of H. georgicus date to a period when H. habilis and H. erectus overlapped in time). However, this proposal has not gained acceptance.
For the present, it's fair to say only that H. georgicus represents a new and perplexing twig on the hominid bush.
http://en.wikipedia.org/wiki/Homo_erectusThere is still disagreement on the subject of the classification, ancestry, and progeny of H. erectus, with two major alternative hypotheses: erectus may be another name for Homo ergaster, and therefore the direct ancestor of later hominids such as Homo heidelbergensis, Homo neanderthalensis, and Homo sapiens; or it may be an Asian species distinct from African ergaster.
http://www.archaeologyinfo.com/homoerectus.htmAccordingly, erectus is one of the better-known members of genus Homo, especially in terms of its well-established place in paleoanthropology. This has begun to change, however, and now some question its place in human evolution.
http://www.archaeologyinfo.com/homoerectus.htmThose who see erectus as a modern human ancestor, either see the Asian specimens as a dead-end side branch, or see all the ergaster, heidelbergensis, and erectus specimens as belonging to Homo sapiens.
New Scientist May 3, 1984This further implies that H. sapiens and H. erectus are one and the same species which is changing gradually with time, and any species disctinctions made in it are entirely arbitrary and have no biological meaning.
http://www.archaeologyinfo.com/homoergaster.htmHomo ergaster is one of the more problematic of somewhat accepted species designations currently tossed around in anthropological literature. Each individual researcher that sees ergaster as a valid taxon sees different specimens as belonging or not belonging to the taxon. Many researchers deny any validity to the species at all. On the whole though, most researchers see too little difference between ergaster and erectus to form the basis of a species of the former, separated from the latter. As a general rule of thumb, one can consider most attributed ergaster specimens to be early erectus geographically confined to Africa (however, this is not a hard and fast rule).
http://www.archaeologyinfo.com/homoerectus.htmThose who accept the validity of ergaster usually consider erectus an evolutionary dead-end that went from Africa into Asia, and went extinct there.
http://www.timesonline.co.uk/tol/news/s ... 626645.eceShe has been tentatively identified as a member of a species called Homo antecessor, or “pioneer man�, and lived 300,000 to 400,000 years before any other early humans — or hominins — are known to have reached Western Europe.
These first Europeans, however, are unlikely to have been direct ancestors of Homo sapiens.
http://www.christopherseddon.com/2008/1 ... essor.htmlNeither this view nor Homo antecessor as a species is widely accepted. Many believe that H. antecessor is an ofshoot of Homo ergaster and that it died off without issue, possibly during the glacial periods of 800,000-600,000 years ago.
http://en.wikipedia.org/wiki/Homo_antecessorHomo antecessor is an extinct human species (or subspecies) dating from 1.2 million to 800,000 years ago, that was discovered by Eudald Carbonell, J. L. Arsuaga and J. M. Bermúdez de Castro. H. antecessor is one of the earliest known human varieties in Europe. Various archaeologists and anthropologists have debated how H. antecessor related to other Homo species in Europe, with suggestions that it was an evolutionary link between H. ergaster and H. heidelbergensis, although Richard Klein believes that it was instead a separate species that evolved from H. ergaster.[1] Others[who?] believe that H. antecessor is in fact the same species as H. heidelbergensis, who inhabited Europe from 600,000 to 250,000 years ago in the Pleistocene.
http://www.archaeology.org/online/news/gran.dolina.htmlIf the Gran Dolina (Homo antecessor) fossils do represent a new species, the human family tree must be revised. ... In this scenario both Homo erectus and Homo heidelbergensis are off the line leading to modern humans.
http://anthro.palomar.edu/homo2/mod_homo_1.htmThere is not a general agreement at this time as to how Homo heidelbergensis fossils should be classified. Some paleoanthropologists prefer to classify the more recent ones as archaic humans or archaic Homo Sapiens. Likewise, some of the earliest Homo heidelbergensis are classified as Homo antecessor or even late transitional Homo erectus.
http://www.macroevolution.net/homo-heidelbergensis.htmlThe status of Homo heidelbergensis as a distinct type of hominid is controversial. Many researchers maintain the facts disallow any clear distinction between Homo erectus and early Homo sapiens. They say that heidelbergensis is simply a name imposed by humans on fossils that should be regarded as transitional and that specimens assigned this name should in fact be regarded as either "late Homo erectus" or "archaic Homo sapiens."
http://en.wikipedia.org/wiki/Homo_heidelbergensisBut because H. heidelbergensis had a larger brain-case — with a typical cranial volume of 1100–1400 cm³ overlapping the 1350 cm³ average of modern humans — and had more advanced tools and behavior, it has been given a separate species classification. The species was tall, 1.8 m (6 ft) on average, and more muscular than modern humans.
http://www.wisegeek.com/what-was-homo-h ... gensis.htmThese digs have uncovered large numbers of tools, along with the evidence of hunting, the use of fire, and burial practices. Homo heidelbergensis may have been one of the first hominids to bury the dead, and archaeologists have also found evidence of other cultural rituals.
Homo heidelbergensis had a larger brain when compared to other hominid species, and a body type which appears to be very similar to that of modern humans, although Homo heidelbergensis was somewhat taller.
sinebender wrote:in response to....What I want, is not an attack on evolution, which you seem to be continuing, but rather evidence for the positive claim for special creation.
I think the evidence you are looking for is the mathematics, the golden triangle, the fibonacci number sequence in how it applied to the human body. Evidence of design.