Abaddon
Deity
but it would take many many many generations
Humans not evolving any more?
- Thread starter Abaddon
- Start date
Eukaryote
Deity
Well we won't notice eveloution buddy because is so slow. Scients say although are heads have gotten much bigger over the millena, that they won't get bigger anymore until women grow to be bigger and wider after pubrety because otherwise our heads wouldn't be able to fit though being born.
Seth the Dark
The Lost Soul
And besides Evolution is random. If some new gene was created it would soon be flooded by breeding with other people that didn't have the same gene.
Mutations are random. Evolution is not random. It is imperative that you do not confuse the two!
Most detectable mutations have negative effects, do not increase the chances of reproducing, and in the wild have no influence on evolution. It is that selective behaviour that ensures evolution is not random.
Most detectable mutations have negative effects, do not increase the chances of reproducing, and in the wild have no influence on evolution. It is that selective behaviour that ensures evolution is not random.
Abaddon
Deity
Does anyone believe humans have removed natural selection as a force controlling our evolution?
azzaman333
meh
To an extent.
Bluemofia
F=ma
No. We just slowed down the process.
warpus
Sommerswerd asked me to change this
Sure we are, except that natural selection doesn't have as big of a rule as it used to.
Everyone's breeding, even the incompetent. It's still evolution, just not as directed by natural selection forces.
Everyone's breeding, even the incompetent. It's still evolution, just not as directed by natural selection forces.
Don't forget that a lot of the world doesn't have access to this kind of health care, and that many countries still have infectious diseases as a selection pressure.With things such as the NHS and charity.. are humans still experiencing any evolution, or has it slowed down to negligable levels. Selection pressure, which is the driving force in evolution is devoid in our lives.
...and why we arnt telepaths yet
Evolution is still occurring: Take a look at Africa. The gene for sickle cell anaemia is in very high frequency in places where malaria is endemic. This is because the heterozygotes have an advantage over both homozygotes. Being a sufferer of sickle cell anaemia probably means an early death. Having a wild type phenotype means you have an increased risk of dying from malaria. Having one sickle cell allele and one wild type allele means that you do not suffer from sickle cell anaemia and you have an increased resistance to malaria. Thus, the selection pressures act on the 2 homozygotes and the sickle cell allele spreads.
Mutations occur at the same rate. All natural selection does is alter the likelihood that the gene will be successful or unsuccessful in the population. Different genes will still arise in the different populations and while some will be unsuccessful, through chance, some will be successful. Some genes may become fixed in the population. Then there's also the founder effect: Whenever a population splits, through chance, the founding population of each new population will have different frequencies of different alleles. These will be carried through into the offspring. So the allele frequencies will start off slightly different. Some may vary quite a lot between the two populations.
Evolution will occur with or without natural selection, due to chance. It just makes if far, far slower.
Whats with all the bumping "Whomp"?
Abaddon
Deity
I always do with a milestone post. I always go back an bump a few threads i think are still relevant, and my boat thread regardless of its relevance 
Bluemofia
F=ma
Natural selection only stops when 100% of a species survives to reproduce.
And not 100% of humans survive to reproduce. There are still factors that stop us that may not be so "natural", but are considered natural selection. (smarter people not breeding like bunnies, and some statistically dumber people doing so, amount of wealth, family social history, etc.)
There's absolutely still evolution going on. You cannot stop it. Even natural selection is occuring, because we're allowing the propagation of genes that didn't used to survive. Many of these genes will then be propagated and when our next huge selection event occurs, some will survive.
Just because our selection events are not immediate effects that we used to have, doesn't mean they're all gone.
Just because our selection events are not immediate effects that we used to have, doesn't mean they're all gone.
Xanikk999
History junkie
Humans will not evolve anymore unless our population becomes seperated.
The way it is now, no specific genes are being emphasized over others, so speciation is not occuring.
(I hope it sounds like i know what im talking about.)
The way it is now, no specific genes are being emphasized over others, so speciation is not occuring.
(I hope it sounds like i know what im talking about.)
Bluemofia
F=ma
Humans will not evolve anymore unless our population becomes seperated.
The way it is now, no specific genes are being emphasized over others, so speciation is not occuring.
(I hope it sounds like i know what im talking about.)
You mean we won't divergently evolve. We are evolving, just more slowly than other species because more of us are surviving to reproduce.
And yes, specific genes are being emphasized over others. Such as intelligence capacity, height capacity, sociability (nature or nurture can be argued with this one. I argue both.), etc.
(You made it vague enough.
)
I agree with the first bit but that emphasises how evolution is still occuring...
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