Scientists finally think they know why giraffe necks are so long
A later theory usurped Darwin and Lamarck's, suggesting that male giraffes ... from photos of adult Masai giraffes, a species ...
BBC2 年
The work of Lamarck
Charles Darwin close Charles DarwinAn English ... and simple organisms disappear. Lamarck's theory suggested that the giraffe's original short-necked ancestor repeatedly stretched its neck to ...
BBC4 年
Lamarck and Natural Selection
Melvyn Bragg discusses Jean-Baptiste Lamarck, the 18th century French scientist, and his theory of Natural Selection. Who was he and how far did he pave the way for Darwin? Show more Melvyn Bragg ...
PBS8 年
Jean Baptiste Lamarck
Jean Baptiste Lamarck (1744-1829) is one of the best-known early evolutionists. Unlike Darwin, Lamarck believed that living things evolved in a continuously upward direction, from dead matter ...