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'''Darwin's''' theory suggests that [[giraffe]]s developed as they did because an animal with a longer than average neck would have an advantage in reaching foliage that its shorter-necked fellows could not. Therefore it would be healthier, more successful in breeding and hence more likely to pass on its long-necked genes.

'''Darwin's''' theory suggests that [[giraffe]]s developed as they did because an animal with a longer than average neck would have an advantage in reaching foliage that its shorter-necked fellows could not. Therefore it would be healthier, more successful in breeding and hence more likely to pass on its long-necked genes.

While Lamarck's theories were tossed out relatively quickly, Darwin's are proving more stubborn, but are losing traction every day among serious scientists.

While Lamarck's theories were rejected relatively quickly, Darwin's have proved more enduring.