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Darwin was puzzled about the many adaptations of the finches on the Galapagos Islands
Kaylah Ward
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∙ 11y agoDarwin's finches show adaptations to their own specific environments, their beaks are all different. They are an example of an allopatric speciation, where an original population of birds became split by natural barriers, and adapted indepenently of each other.
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∙ 13y agoThese finches came from the mainland and populated all of the Galapagos Islands and took over many of the niches by diversifying in beak morphology to eat various resources.
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∙ 12y agoThere beaks adapted to be able to eat certain seeds.
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∙ 11y agomorphology
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Which form of speciation is most rapid A. sympatric speciation via character displacement B. allopatric speciation on the island archipelagos C. sympatric speciation via autopolyploidy D. allopa?
B. Allopactric speciation on island archipelagos. As the organisms move from island to island rapid speciation is observed because of variations in resource acquisition more than just variation in environment. Amplified radiation is observed. Example is finches on the Galapagos Islands. Hawaii also gives this example.
Why would a finch population that lives on an island have a higher rate of speciation that a finch population that lived in a large forest in north America?
A finch population on an island is more isolated than Êa finch population in a large forest. ÊThe gene pool of the island population would be more limited than the genetic possibilities of the finch population in the forest. ÊThe island finches would be more likely to pass on specialized genes than the forest finches. the island finches have more spatial isolation the island finches have more geographical isolation
Speciation caused by change in the course of a river is an example pf divergent speciation?
Allopatric speciation.
What type of speciation requires a geographic barrier?
Alopatric speciation. " Other country. "
How are finches in the Galapaagos Islands a good example of adaptation?
Finches developed many different adaptations. For example, one type of finch had a short strong beak meant for cracking seeds, while another had a long narrow beak for gathering food from the inside of flowers, and cacti, therefore making each species more adapted to its specific environment and more able to gather food then they would on another island with a different main food source.
Which type of speciation occurred among galapagos islands finches?
allopatric speciation
Which type of speciation occurs among the Galapagos islands finches?
allopatric speciation
The evolution of Darwin's finches is an example of what?
speciation
What was the first step of speciation of the Galapagos Finches?
Arrival of the founding population
What pattern of evolution is demonstrated by Galapagos finches?
Speciation, which produces variety
Why are finches in the Gal and aacutepagos Islands a good example of speciation?
Answer this question… . Galápagos finches have different kinds of beaks that match food sources.
What type of speciation occurred among the Galapagos Islands finches?
The type of speciation that occurred among the Galapagos Islands finches is called "allopatric" speciation. Allopatric comes from roots meaning "other country". The immigrant finches, and many other birds and animals, were very isolated from other populations of the same species on the individual Galapagos Islands. The finches developed into at least 13 different species of finch on the islands.
Which form of speciation is most rapid A. sympatric speciation via character displacement B. allopatric speciation on the island archipelagos C. sympatric speciation via autopolyploidy D. allopa?
B. Allopactric speciation on island archipelagos. As the organisms move from island to island rapid speciation is observed because of variations in resource acquisition more than just variation in environment. Amplified radiation is observed. Example is finches on the Galapagos Islands. Hawaii also gives this example.
Darwin's finches speciation how did the population separate?
The distance between the islands meant that the Fincehes on different Islands could not interbreed wich led to some extinction
Why would a finch population that lives on an island have a higher rate of speciation than an finch population on that lived in a large forest in north America?
Island finches are specially isolated whereas populations that live in large forests aren't. The island finches will have more gene flow.
What are the three major strengths of darwins work?
evidence in real time - finches fossil evidence evidence now backed up by genetics geological evidence of strata not just fossils
How does the existence of an archipelago promote speciation?
An archipelago is basically a group of islands. Speciation according to the Biological Species Concept by Ernest Mayr, is -- populations whose members can interbreed and produce viable, fertile offspring. For example, the Galapagos finches studied by Charles Darwin. Some live on different parts of the archipelago and so have different features, adapting to their environment. These different feature obviously get passed down and are more frequent in future populations because those finches with this specific adaptation lived and reproduced better. So since there are different islands, there are different finch speciation and so the geographic isolation promotes speciation.
