RE: Reverse Engineering a Dinosaur?
May 15, 2015 at 8:00 pm
(This post was last modified: May 15, 2015 at 8:02 pm by Anomalocaris.)
(May 15, 2015 at 7:19 pm)SteelCurtain Wrote: So, turn off the gene expression for facial formation, chicken reverts to earlier state... No information was added.... Interesting.
Jesus!
It's not so much reverting to earlier state, as unlocking Differernt combinations of expressions of existing genes, some of which have already been expressed earlier during the species evolutionary history.
Many evolutionary changes came about not by creation of new genes, but by turning on, or turning off, or changing the time of development of different preexisting genes. For example, many of the major changes that accompanied evolution of modern humans involved tempering with the individual maturation rates of features already encoded in our ancester's genes. In fact the distinct flat face and mouth of HSS came about by turning off the genes which cause chimps to grow a snout as chimp infant mature into chimp adult. In fact we retained a infant chimp's lower face and lower jaw through life while the rest of us grew up. If someone were to dare, it would not be hard to make a human infant grow a snout as he matures into adulthood by turning off the gene which keeps human lower skull from maturing as we grow up,
