Discussing Darwin and Evolution
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1. In Darwin's five-year voyage, how did each of the following influence the development of his ideas: Oceanic islands, coral atolls, sea-going iguanas, geographic variation.
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In Darwin's five-year voyage, this solution examines various influences in the development of his ideas: oceanic islands, coral atolls, sea-going iguanas, geographic variation. References provided.
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1. In Darwin's five-year voyage, how did each of the following influence the development of his ideas: Oceanic islands, coral atolls, sea-going iguanas, and geographic variation.
Charles Darwin was offered the position of naturalist for the second voyage of H. M. S. Beagle to survey the coast of Patagonia and Tierra del Fuego and complete observations of longitude by circumnavigation with a formidable array of chronometers. The Beagle left on Dec. 27, 1831, and returned on Oct. 2, 1836.
During the voyage Darwin spent 535 days at sea and roughly 1200 on land. Enough identification of strata could be done on the spot, but sufficiently accurate identification of living organisms required systematists accessible only in London and Paris. Darwin kept his field observations in notebooks with the specimens listed serially and their place and time of collection documented. During the trip Darwin discovered:
· The relevance of Lyell's uniformitarian views to the structure of St. Jago (Cape Verde Islands).
· He found that small locally living forms closely resembled large terrestrial fossil mammals embedded between marine shell layers and that the local sea was populated with living occupants of similar shells.
· He also observed the overlapping distribution on the continuous Patagonian plain of two closely related but distinct species of ostrich.
· ...
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