Darwin's Finches
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Darwin's Finches
I am not a biologist, and this is just my opinion...
I think that Darwin's finches do not evolve. They are all born with the same beaks, and if you take an offspring of the bird with a long beak and put it to live in the environment where finches with short beaks live, it will grow up with short beak.... Even if parents changed, their offspring will not necessarily be like them....
it depends on environment, and not genes
I think that Darwin's finches do not evolve. They are all born with the same beaks, and if you take an offspring of the bird with a long beak and put it to live in the environment where finches with short beaks live, it will grow up with short beak.... Even if parents changed, their offspring will not necessarily be like them....
it depends on environment, and not genes
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Well of course the external appearance can change somewhat such as when we grow older or get more muscles but what you're talking about is voluntarily changing(your finch example). That constitutes larmarkianism and it doesn't happen.You can try this for yourself really. Buy three birds(one short and 2 long beaked) and see if the odd one out conforms to the pair.
Although you have the right to your opinion, I do believe it would be wise to read some biology books before making empirical statements as such.
Although you have the right to your opinion, I do believe it would be wise to read some biology books before making empirical statements as such.
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Enjoying one moment at a time;
Accepting hardships as the pathway to peace;
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Enjoying one moment at a time;
Accepting hardships as the pathway to peace;
~Niebuhr
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mithrilhack wrote:Well of course the external appearance can change somewhat such as when we grow older or get more muscles but what you're talking about is voluntarily changing(your finch example). That constitutes larmarkianism and it doesn't happen.You can try this for yourself really. Buy three birds(one short and 2 long beaked) and see if the odd one out conforms to the pair.
Although you have the right to your opinion, I do believe it would be wise to read some biology books before making empirical statements as such.
yeah, i guess i should read some biology books... i am not really a biologist, you know
Do you know about Chinook Indians that lived up in Seattle area? They were called flatheads because in their tribe, when babies were born, parents placed some plate on their head so it grew flat...
http://www.usgennet.org/alhnorus/ahorclak/flathead.jpg
they have been doing it for at least 5,000 years, so why their babies weren't born with flat heads? they didn't have even a slight change...
why is this?
Because the plate didn't change their genetic structure. People aren't "normally" born with flat heads and just because you cut a finger off during your life, have sex with someone, and have kids doesn't mean that the kid will be born with a finger missing. You are definitely hardcore Lamarck, this stuff cannot happen man!!!!
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b_d_41501 wrote:Because the plate didn't change their genetic structure. People aren't "normally" born with flat heads and just because you cut a finger off during your life, have sex with someone, and have kids doesn't mean that the kid will be born with a finger missing. You are definitely hardcore Lamarck, this stuff cannot happen man!!!!
can environmental changes change genetic structure of finches?
can environmental changes change genetic structure of finches?
According to darwinism never! In darwinism animals do not adapt to their enviromnent like i need longer beak so my children will have longer beak. Theres natural selection (no adaptation) which select the more succsesfull trait and lesser succesfull traits are deleted from population. So if you put finches with normal length of beaks to the particular island, some children of these birds will have longer neck some will have shorter beak, some will have beak like their parents and which trait will be more succesful that will survive. Genetic material is changing randomly and environment do select these changes. (bad darwinism

It's not that beaks are constantly sprouting out like Pinnochio's nose. The birds with the genetic material for short beaks are simply more successful at certain times, thus the population of the long beaks die off. When conditions arise where the long beaks have a better chance of suvival, then the short beaks start to die and the birds with long beaks become the majority.
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