I always had this question in mind. I think, If humans find answer to it then we can trigger the next evolution of human specie.
What is the mechanism or structure responsible for evolution ? I don't mean the nucleus and the genetic code. because it's the consequence (the result) of evolution.
I mean all that I found right now as studies materials, treat only the consequences of the evolution, similarities between ancestors and descendants..etc
But what process triggers this evolution ? For example, the birds ancestor (which couldn't fly ), how did his cells generate genetic code to build new proteins needed to build new protein structures and organs and also to keep this evolution's result for next generations ?
Is there any current research on this matter ?
Thank you All for your explanation, but they treat only the case when there is only a certain length ADN chain and this chain will change in time to produce let's say "more effective population ".
but if we say that all the species came from one cell. than this cell had necessarily less ADN then we have now (for ex: it doesn't have yet ADN to code for hemoglobin and other complex proteins)
So my question was Where did the new ADN came From ?
This question came to me, when we were studying bacteriology and one bacteria had all my attention, it's the staphylococcus, they produce a coagulase that trigger the coagulation process to stop the blood stream so the phagocytes and immune cells can't reach there position.
Random mutations ? well random process can have some result in variation and deletion of existing species, but not in building new ADN chains.
don't tell me that the staphylococcus acquired the ability to produce this protein randomly, because if we do some math, the ADN is a base 4 code (there is 4 bases) and to produce an amino acid we will need 3 bases, so for 30 A.A protein we have only one chance in 4 power 90 without adding the random length and the random 3 dimensional structure, I know, even if there is billions of staphylococcus that will mutate all the time there will be nearly 0 chance to produce a protein that can action exactly with the prothrombin.
that's only for one protein.
I Know I have moderate knowledge in biology but I don't believe that errors in a code (mutations) can make it "better" or produce functioning mechanisms that can interact with other organisms, because if we say so, then we are just insulting our intelligence as human being, because we are saying that random process is making organisms that we, with our brain can't reproduce, the proof is we are still using antibiotics and didn't make our immune system more effective.