- My Forums
- Tiger Rant
- LSU Recruiting
- SEC Rant
- Saints Talk
- Pelicans Talk
- More Sports Board
- Winter Olympics
- Fantasy Sports
- Golf Board
- Soccer Board
- O-T Lounge
- Tech Board
- Home/Garden Board
- Outdoor Board
- Health/Fitness Board
- Movie/TV Board
- Book Board
- Music Board
- Political Talk
- Money Talk
- Fark Board
- Gaming Board
- Travel Board
- Food/Drink Board
- Ticket Exchange
- TD Help Board
Customize My Forums- View All Forums
- Show Left Links
- Topic Sort Options
- Trending Topics
- Recent Topics
- Active Topics
Started By
Message
0
Posted on 9/25/23 at 6:23 am to TrueTiger
quote:
according to the standard model
Found the problem.
Posted on 9/25/23 at 7:15 am to dafif
quote:No one asserts this. A species is what it is and for a very long time. Read some actually literature on the subject instead of what you perceive to be the position.
the biggest issue that I see is the creation of a new species from another species
Posted on 9/25/23 at 7:25 am to dafif
quote:
the biggest issue that I see is the creation of a new species from another species
Did you not know that we've created new species from existing ones on our own in the lab?
Now multiply that by millions of years.
Posted on 9/25/23 at 7:56 am to FutureMikeVIII
quote:
Like in the same way that everyone dies from cardiac arrest? Because you are much more likely to get cancer as a smoker. That’s not some govt lie
We live in a world where words matter.
The word CAUSE has a specific legal meaning
Nobody argues that smoking may cause or statistically likely but, no it does not specifically cause it.
Posted on 9/25/23 at 8:03 am to AlxTgr
quote:
. A species is what it is and for a very long time. Read some actually literature on the subject instead of what you perceive to be the position.
If I understand your assertions, a species will continue to evolve no argument) and then it evolves into another species???
Can you give me the theory/example that supports this? How would this work with humans for example- what is out next step in evolution
Posted on 9/25/23 at 8:11 am to dafif
quote:Depending on natural pressures, speciation takes place VERY slowly. An equine dinohippus didn't give birth one day to a zebra, and the next to a horse. That is not the way it works.
the biggest issue that I see is the creation of a new species from another species
Individual chromosomal mutations inevitably occur within a population. Many result in weaker animals which are unable pass on the mutation. However, some mutations are beneficial and result in enhanced survival, therefore more pronounced phenotypic expression in the population. (e.g., Zebra stripes)
But fair examination of the Equus genus is revealing. For example, Plains Zebra, Grevy's Zebra, and Mountain Zebra seem to have evolved their their stripes independently, indicating striped importance in natural selection.
Likewise hybridization of horses, zebra, and donkeys (wild asses) is telling. In most instances, foals are born sterile, but often otherwise very functional. e.g., mules. Clearly that indicates common ancestry.
However, in more closely related instances such as mating a Common Horse (64 chromosomes) with Przewalski Horse (66 chromosomes), foals are often fertile despite parental genetics. Again indicating common ancestry, but pointing to a more recent common ancestor.
Breeding can reproduce the process in an accelerated way. e.g., Hairless cats, or dog breeds which can no longer naturally mate with other breeds.
Posted on 9/25/23 at 8:21 am to dafif
quote:It's a little more complicated now that man has the ability to alter the natural selection process.
If I understand your assertions, a species will continue to evolve no argument) and then it evolves into another species???
Posted on 9/25/23 at 9:28 am to BamaAtl
quote:
Did you not know that we've created new species from existing ones on our own in the lab? Now multiply that by millions of years.
He probably doesn’t know how we created a bunch of different species of fruit flies or moths in the lab. He’s also simply not thinking about how the flu, or Covid, or gonorrhea evolves into new species in timeframes measured in months, or how horses and donkeys are barely past the point of speciation such that they can still hybridize with each other even though they have different amounts of chromosomes. He’s also not thinking about observing the past through genetic analysis and fossils.
This post was edited on 9/25/23 at 9:32 am
Posted on 9/25/23 at 9:35 am to Flats
quote:
It's been used as a power word for decades now; a word meant to shut down any further disagreements. "The science is settled", "the science says", or the evil dwarf's breathtakingly arrogant claim of "I AM science". It amazes me that people see the flaws in the research world in certain areas but then pretend the area where they agree with the consensus is magically free of any human influence.
Not only are scientists normal people with the same flaws your average gas station clerk has, scientism is a grossly inadequate framework on which to base a society. The scientific method can tell me how to feed a population or starve a population; it's silent on which of those is a desirable goal.
All this, plus science theories and results can be purchased as we know, even the review process.
Posted on 9/25/23 at 9:44 am to dafif
quote:This is where I have an issue. The critter is what is it for it's entire lifetime. At some point, a species begins to differ for whatever reason, let's say geographical isolation or change in breeding grounds, such that it no longer breeds with other portions of the parent population.
and then it evolves into another species???
quote:
Can you give me the theory/example that supports this?
quote:With our mobility and willingness for all populations to produce fertile offspring, any real change is probably impossible to predict.
How would this work with humans for example- what is out next step in evolution
Posted on 9/25/23 at 11:08 am to Squirrelmeister
quote:Genetic manipulation is quite different.
He probably doesn’t know how we created a bunch of different species of fruit flies or moths in the lab.
Though allopolyploidy is not the norm in new species creation, it does provide more of the instant evolution he seems to covet. The Ownbey's Goat's-beard allopolyploid hybrid flower would be an example.
Posted on 9/25/23 at 12:25 pm to NC_Tigah
quote:
Genetic manipulation is quite different.
It was basically artificial selection and genetic drift, not genetic manipulation. They take one population, separate them into two groups, let the two groups reproduce for a few dozen generations, and then mix the two groups again and the members of the different groups either will no longer mate or cannot produce offspring.
Posted on 9/25/23 at 1:00 pm to AlxTgr
quote:
Whale leg bone
We also have a “bird” (archaeopteryx) with unfused finger bones, claws on its fingers, and razor sharp dinosaur teeth, not to mention Velociraptors and T-Rexes with feathers.
We also have monkey men that for all intents and purposes were upright walking chimps - chimp-like faces and cranial capacity with a body below the neck that would’ve looked like a hairy modern human.
Fascinating stuff.
Posted on 9/25/23 at 1:55 pm to Squirrelmeister
"vestigial structures" makes for a very good search.
Posted on 9/25/23 at 3:39 pm to Squirrelmeister
quote:I get it. But the 'complaint' could be it was artificial selection.
It was basically artificial selection and genetic drift
In contrast, the Ownbey's Goat's-beard flower hybrid occurred naturally and, over 40 generations or so, proved it was/is a more environmentally adaptable (i.e., "hardier") species than its predecessors.
Posted on 9/25/23 at 4:04 pm to dafif
quote:
If I understand your assertions, a species will continue to evolve no argument) and then it evolves into another species??? Can you give me the theory/example that supports this? How would this work with humans for example- what is out next step in evolution
There is no natural “next step” in human evolution. Humans are on every continent and every climate and exist in a range of social situations and institutions that favor different mating strategies and reward different behaviors and attributes. There’s just not enough natural pressure on us as a species to make us breed in a particular direction.
Posted on 9/25/23 at 4:05 pm to LSUbest
quote:
This is what happens when the "theory" is developed to fit a preferred conclusion.
Why would the current cosmological model be "preferred" ? I don't get it.
Posted on 9/25/23 at 4:08 pm to MAADFACTS
quote:Until the next mass extinction? Perhaps of our own doing.
There is no natural “next step” in human evolution.
Posted on 9/25/23 at 4:10 pm to MAADFACTS
There were some Russian scientists who were working on foxes back in the 1930s trying to see how dogs as we know them came to be. They were lying to the Kremlin about what they were actually studying because for some reason the Soviets were killing scientists for asking these sorts of questions. It was the Stalin era. Anyway, they only let foxes breed if they weren’t skittish around humans or were friendly with humans. Within three generations that foxes, with only those that selection criteria had developed round friendly faces and the dispositions of domestic dogs. You can own them but be warned. They can’t be trained and won’t be house broken, but they will be a friendly little round face buddy so you got to weigh those two things against each other I guess
Page 31 of 35
Popular
Back to top
Follow TigerDroppings for LSU Football News