jeannot
Posts: 1201
Joined: Jan. 2006
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| Quote | | there are many functional sequences that are different (even radically so) amongst related lineages - this due to their being of designed, not mutational, origin. |
That's unclear. How will you know that differences are not the result of mutations? Drift, positive selection and negative selection can lead to different level of divergence between regions.
And what to you mean by "being of designed origin"? Do new genes appear (from God knows where) instantaneously in a lineage? Or were they front loaded in the first cell?
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