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[PhysOrg] New species of lizard created in lab that reproduces by cloning itself - Page 3

post #21 of 64
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Quote:
Originally Posted by thiru View Post
Eventually the environment changes. What then?
Yes the environment will change and the asexually reproduced 'unfit' individuals will die.
Asexual reproduction is much faster than sexual. So the fit induviduals will reproduce faster and because this organism can also sexually reproduce, the better fit asexually reproduced orgs will mate with each other (as the unfit ones dies anyway and the fit ones increased in number faster)

point being : speed (increase in number)
energy advantage

makes it more advantageous than sexual
(sexual does have its strong points too but its win win for this lizards cos it can do both!!!)
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post #22 of 64
So is everyone just too ignorant to understand this? Everyone is completely missing the point. You don't think the people who are completing this research are well aware of the genetic downfalls of such a reproductive method? OF COURSE they are. They have more knowledge of genetics in the tip of their pinky than most of you probably do in total. There are many applications for this type of thing - imagine an animal that contains a specific blood type, organ, etc. that would be suitable for human use but must be genetically the same each time. Not to mention this would be a much more efficient way to reproduce in a research/academic sense and if the scientists wanted to focus on a certain gene pattern they wouldn't have to clone the animal themselves.
post #23 of 64
Quote:
Originally Posted by kenpachiroks View Post
Yes the environment will change and the asexually reproduced 'unfit' individuals will die.
Asexual reproduction is much faster than sexual. So the fit induviduals will reproduce faster and because this organism can also sexually reproduce, the better fit asexually reproduced orgs will mate with each other (as the unfit ones dies anyway and the fit ones increased in number faster)

point being : speed (increase in number)
energy advantage

makes it more advantageous than sexual
(sexual does have its strong points too but its win win for this lizards cos it can do both!!!)
This... I don't think simply because they aren't shuffling around genes with other mates they aren't capable of over time changing to fit their needs, and it isn't exactly cloning since said lizard would also have dormant traits that may or may not exist in the offspring. So the disease thing doesn't make much sense either because it likely wouldn't affect them all since they really aren't all the same.
post #24 of 64
Intelligent design does exist then, only we are the gods now.
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post #25 of 64
All hail the lizard queen!
post #26 of 64
Quote:
Originally Posted by kenpachiroks View Post
Yes the environment will change and the asexually reproduced 'unfit' individuals will die.
Asexual reproduction is much faster than sexual. So the fit induviduals will reproduce faster and because this organism can also sexually reproduce, the better fit asexually reproduced orgs will mate with each other (as the unfit ones dies anyway and the fit ones increased in number faster)

point being : speed (increase in number)
energy advantage

makes it more advantageous than sexual
(sexual does have its strong points too but its win win for this lizards cos it can do both!!!)
Did you read the article? not only it says they're a new species, which means that inter-breeding back with either original species is not guaranteed, but it sounds like all the offspring are female to the 4th generation (I know it doesn't say that, but it does say that the first 2 generations are 100% females, which already has an extremely low probability of happening, 2^(-11) percent chance if each offspring had 6 of its own)

So these lizards are either only capable of asexual reproduction because of lack of compatible males, or they will eventually replace the original species since every offspring is female and then become a strictly asexual species. edit: or this asexual species dies out.

Not both.

Quote:
Originally Posted by Madman340 View Post
This... I don't think simply because they aren't shuffling around genes with other mates they aren't capable of over time changing to fit their needs, and it isn't exactly cloning since said lizard would also have dormant traits that may or may not exist in the offspring. So the disease thing doesn't make much sense either because it likely wouldn't affect them all since they really aren't all the same.
Oh really? why are asexual species not more dominant then? also think about how sexual production forces males (and females in some species) to compete, how it led those species to communicate, to live in pairs and in groups.

Can you imagine mankind living in society and achieving what it has without sexuality? I know this is extremely long term, but think about it.
Edited by thiru - 5/8/11 at 10:28am
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post #27 of 64

Does this mean they can make dinosaurs?

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post #28 of 64
Quote:
Originally Posted by Twinnuke View Post
Wheeeeew you hear all these genetic / enviroment / adaptability experts in here?
Well, they may not be experts but what they are discussing is covered in detail in most introductory bio courses in college. So if they have that knowledge then by all means -- apply it!

On Topic:

This is interesting but I agree with the aforementioned post. This would do horrors to nature's own mechanisms for propagation and survival of a species (:
post #29 of 64
Quote:
Originally Posted by MjoLniRXx View Post
Well, they may not be experts but what they are discussing is covered in detail in most introductory bio courses in college. So if they have that knowledge then by all means -- apply it!
Except they are all applying it to the validity of this lizard as a species - which is utterly besides the point of why such research is conducted.
post #30 of 64
I don't understand how everyone thinks asexual reproduction precludes evolution. Mutation to the genetic code can still occur and be passed down without meiosis, and does regularly. After all, bacteria reproduce asexually, and have loads of diversity within their kingdom. Not to mention their evolution led to well, every other living species existing.
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