Word: gilberts
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...looking at the structures and positions of exons and introns, Gilbert found that introns, and exons line up in a non-random way in the DNA of most living things, both primitive and modern...
...That means that ancient regions, which represent genes or portions of genes, have descended in a relatively unchanged manner from a common ancestor," Gilbert told reporters earlier this week. "This supports the theory that introns have facilitated the shuffling of exons from the time of the origin of genes...
...Gilbert added that this evidence also suggests that genes are probably composed of fewer than 100 basic building blocks, not hundreds or thousands as was once believed...
...Gilbert's research does not yet conclusively prove that the common ancestor of modern life arose from the recombination of exons...
...theory demands certain consequences," Gilbert said. "If we make predictions based upon it and find that the predictions are correct, then we've gone...