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Camels and Llamas are examples of dispersed individuals evolving separately, which is considered a consequence of
Camels and Llamas are examples of dispersed individuals evolving separately, which is considered a consequence of
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Solution
The correct option is C Continental drift
Camels and their relatives, the llamas, are found on two continents, with true camels in Asia and Africa, and llamas in South America. There are no camels in North America. Based on descent with modification, it would be expected that camels once existed in North America but became extinct. Indeed, there was the discovery of a large fossil fauna of Tertiary camels in North America. One proposal for the fossil record for the camel is that camels started in North America, from which they migrated across the Bering Strait into Asia and hence to Africa, and through the Isthmus of Panama into South America. Once isolated, they evolved along their own lines, producing the modern camel in Asia and Africa, the llama in South America, and becoming extinct in North America. The same kinds of fossils are found from areas known to have been adjacent to one another in the past, but which, through the process of continental drift, are now in widely divergent geographic locations. This is an evidence of continental drift and not the consequence of ecological barriers, climate barriers and topographical factors. Thus, option C is correct and other options are wrong.
Camels and their relatives, the llamas, are found on two continents, with true camels in Asia and Africa, and llamas in South America. There are no camels in North America. Based on descent with modification, it would be expected that camels once existed in North America but became extinct. Indeed, there was the discovery of a large fossil fauna of Tertiary camels in North America. One proposal for the fossil record for the camel is that camels started in North America, from which they migrated across the Bering Strait into Asia and hence to Africa, and through the Isthmus of Panama into South America. Once isolated, they evolved along their own lines, producing the modern camel in Asia and Africa, the llama in South America, and becoming extinct in North America. The same kinds of fossils are found from areas known to have been adjacent to one another in the past, but which, through the process of continental drift, are now in widely divergent geographic locations. This is an evidence of continental drift and not the consequence of ecological barriers, climate barriers and topographical factors. Thus, option C is correct and other options are wrong.
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