If Evolution is true, how did DNA code itself

" If Evolution is true, how did DNA code itself "

The topic question puts cart before horse.

When Watson & Crick revealed chromosomes, and realized their role in cellular multiplication, it promoted our understanding of biology.

But it's a mistake to think humans use DNA the way a cassette deck uses an audio tape.

Wilson put the lie to that.

The fact is, it's the DNA that creates us.

It's a competitive world. We compete for the best spouse, the best job, the best car, the best house, the best college, etc.
But Wilson explained that it's not really humans competing. It's our DNA that has us compete, much the way nations provide the Olympic games with competitors. The competitors compete, but it's the nations that are competing against one another.

DNA competes, with the simple purpose of proliferation. DNA not suited to the competition can end up a terminal branch in the family tree.
It's the successful DNA that tends to propagate. The Dodo is dead.

BUT !!

There may be more humans alive today than have died. That's why it's called a population explosion.
 
Anyone besides Sear? I find it difficult to read his posts. I read it twice and it really doesn't make much sense.

Thank you for posting though.
 
DNA is the building blocks of all living things.

As evolution progressed, those with defective DNA didn't survive or advance very far up the scale.
But then you have to tie in cataclysmic disasters and those who were so specialized, that they couldn't adapt to significant changes.
 
" If Evolution is true, how did DNA code itself ".........................little by little over time....obviously.:palm:
 
Adversity is the engine of evolution.
Click to expand...
"As evolution progressed, those with defective DNA didn't survive or advance very far up the scale.
But then you have to tie in cataclysmic disasters and those who were so specialized, that they couldn't adapt to significant changes." u9 #4

But DNA faces adversity individual genes can't predict.
The success of competing DNA is strongly influenced by environmental or ambient factors.

As Dr. Carl Sagan observed in his Putlitzer Prize winning book The Dragons of Eden (strongly recommended; an excellent read tailored to the layman)
while the (proto)human population was severely challenged during the most recent ice age,
cranial volume (and thereby brain capacity) skyrocketed.

Anthropologists deduce that the extreme adversity for survival meant only the most resourceful survived.

A previous adversity seems to have killed off the dinosaurs.

Archeological evidence seems to indicate hominids barely survived.

- Chimpanzees and gorillas are stronger.
- Arctic Terns are naturally wider-ranging.
- Birds build better homes (without arms) [when was the most recent time you read of a bird's nest w/ roof collapse?]
- canids and wildcats can chase you down, and eat you up. But cranial volume has given us the rapier, the cage, the gun; and the most ferocious predators on Earth have become the hunted instead of the hunter. Not because humans have sharper teeth. But because we have better aim.
 
The mod with no name said:
see that post? ^

I didn't read it
Click to expand...

Did you not read the bit about the last Ice Age? It's funny but I thought most preppers were loonies waiting for the end of the world so that they could go around shooting people. Apparently they are highly resourceful and will be the human equivalent of cockroaches after a nuclear war.

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With abiogenesis, we can trace life back to amino acids, which are the smallest building blocks of DNA needed for the process of evolution. Not sure how we got to amino acids, though.
 
Yaya said:
This was a question posed to me the other day.

What do the great people of JPP say?
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I'm not sure I understand your question. It's very vague. Do you mean "how does DNA replicate it self?"
Self replication is part of what makes Nucleic acids biologically significant and the laws of genetic inheritance possible.

Or are you asking how does DNA sequencing work or why does DNA know how to sequence base pairings that provide the information for specific protein synthesis? I. E. How does DNA code for proteins?

It's really an odd question to answer scientifically as science doesn't deal with absolute truths but what are facts to the best of our knowledge. The question was like asking "If gravity is true than how can a plane or a bird fly?"

The facts and laws of nature supporting biological evolution are as well known as those of gravity even if we don't know everything about either.

So for the sake of argument can you clarify your question as DNA doesn't "code itself" DNA "copies itself". It codes for proteins. Which are you asking?

I would argue that the person asking the question does not understand either evolution or genetics as DNA does not code itself. It codes for proteins. That makes protein synthesis possible. DNA also self replicates. That makes genetic inheritance of the protein coding function of DNA possible. That link to biological evolution is clear via the biological law of inheritance and the biological law of variation.
 
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Mott the Hoople said:
I'm not sure I understand your question. It's very vague. Do you mean "how does DNA replicate it self?"
Self replication is part of what makes Nucleic acids biologically significant and the laws of genetic inheritance possible.

Or are you asking how does DNA sequencing work or why does DNA know how to sequence base pairings that provide the information for specific protein synthesis? I. E. How does DNA code for proteins?

It's really an odd question to answer scientifically as science doesn't deal with absolute truths but what are facts to the best of our knowledge. The question was like asking "If gravity is true than how can a plane or a bird fly?"

The facts and laws of nature supporting biological evolution are as well known as those of gravity even if we don't know everything about either.

So for the sake of argument can you clarify your question as DNA doesn't "code itself" DNA "copies itself". It codes for proteins. Which are you asking?

I would argue that the person asking the question does not understand either evolution or genetics as DNA does not code itself. It codes for proteins. That makes protein synthesis possible. DNA also self replicates. That makes genetic inheritance of the protein coding function of DNA possible. That link to biological evolution is clear via the biological law of inheritance and the biological law of variation.
Click to expand...
I think you are forgetting about the role that RNA plays, it is vital to preserve the integrity of the DNA master copy.

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Evolution is true without a definitive answer to that question if by that question you really are asking how did life begin.
 
Milagro said:
I think you are forgetting about the role that RNA plays, it is vital to preserve the integrity of the DNA master copy.

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Click to expand...
Not at all. As I stated above self replication is a big part of what makes "nucleic acids" biologically significant. Not to mention the role they play in protein synthesis. RNA obviously being a nucleic acid. RNA is obviously critical for transferring than transcribing DNA's protein coding in the protein synthesis process.

That wasn't his question though.
 
sear said:
"As evolution progressed, those with defective DNA didn't survive or advance very far up the scale.
But then you have to tie in cataclysmic disasters and those who were so specialized, that they couldn't adapt to significant changes." u9 #4

But DNA faces adversity individual genes can't predict.
The success of competing DNA is strongly influenced by environmental or ambient factors.

As Dr. Carl Sagan observed in his Putlitzer Prize winning book The Dragons of Eden (strongly recommended; an excellent read tailored to the layman)
while the (proto)human population was severely challenged during the most recent ice age,
cranial volume (and thereby brain capacity) skyrocketed.

Anthropologists deduce that the extreme adversity for survival meant only the most resourceful survived.

A previous adversity seems to have killed off the dinosaurs.

Archeological evidence seems to indicate hominids barely survived.

- Chimpanzees and gorillas are stronger.
- Arctic Terns are naturally wider-ranging.
- Birds build better homes (without arms) [when was the most recent time you read of a bird's nest w/ roof collapse?]
- canids and wildcats can chase you down, and eat you up. But cranial volume has given us the rapier, the cage, the gun; and the most ferocious predators on Earth have become the hunted instead of the hunter. Not because humans have sharper teeth. But because we have better aim.
Click to expand...
The ice age is credited for one of the two main periods when human brains became larger/more developed.

First, they witnessed carnivores eating meat, and did the same. The protein spike is credited with developing the brain.

When the ice age was upon humans, instead of being nomadic, they were sequestered in pockets. Some say the inbreeding created super intelligent individuals, as well as inferior individual who didn't survive.

Or lived to evolve into Republicans.
 
Althea said:
The ice age is credited for one of the two main periods when human brains became larger/more developed.

First, they witnessed carnivores eating meat, and did the same. The protein spike is credited with developing the brain.

When the ice age was upon humans, instead of being nomadic, they were sequestered in pockets. Some say the inbreeding created super intelligent individuals, as well as inferior individual who didn't survive.

Or lived to evolve into Republicans.
Click to expand...

It appears humans are diverging into two distinct types of mammals, one being statuesque intelligentsia with cheekbones God can slice cheese with and the other some sort of slumped over doddering hobgoblin. For simplicity sake we can refer to them as Democrats and Republicans, respectively.
 
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