Which was designed again/
Which was designed again/
one was designed by man, the other designed by a loving God.
your existence is probably the best argument that nothing intelligent designed humans.
Not again ffs.
We had this ''disscusion'' already.
They don't even look similar
Are arrowheads invented or discovered?
they were designed
The one on the right isn't very energetically favorable to have occurred without some kind of intelligent design- although it's not like we can totally discount the possibility. Thus, other context clues, such as the contextual age of the sediment it's found in can be used to create a probabilistic determination that leads us to believe it was designed.
On the far left- it's a drawing so of course it was designed. Jokes aside, in the molecular environment you often see things that are as perfectly "geometric" as you can get, whether that be an exact spiral, sphere, circle, etc- and so piston-like structures like the one imaged aren't too difficult to think it could arise. After all, evolution has been occurring for billions of years, and matters of optimization (a mutation that essentially increases efficiency- like, let's say making a structure more circular by a protein change increasing electronegativity in a counter-balance region to a part that was jutting out slightly) are always selected for over their wildtype counterparts.
This blog actually goes over the exact structure you seem to have doubts about, and explains some potential precursor structures.
Biology is such a complex and wonderful field- especially on the molecular or chemical basis- because you come to understand how amazingly complex systems arise from nothing more than the physical principles of reality.
Yeah but what good is 9/10 of a flagellar motor? You have to have something to select for, each step has to at least slightly increase survival
That's a really good question, and it leads to one of the busiest areas of research. There are certain issues of biogenesis that are more 'basal' than others, in trying to figure out how they arose. This situation, however, could be a little more simple.
There are proteins in the cell membrane that act sort of like pumps for import an export of nutrients and food. Now, imagine if one of the genes for the pumps got duplicated- a semi-common genetic error that occurs. Then, one of the copies of the pumps gains some kind of mutation, like some coding segment for a protein gets inserted in the gene for the second copy- thus, addng some strange protein structure or tail that flops when the pump is 'activated'.
If the cell already had some system for utilizing its pump if it ran into food particulates- which is fairly common- then the second copy of the pump would also work on that principle, likely. At this point, selection would occur- the pump action may cause the protein segment to spin, pushing it along faster, and causing some differential success rate at getting to food, causing the optimization to start.
Often times completely differently purposed structures are adapted for new purposes by chance. Feathers, for example, are great for flight- but the first evidence for feathers is on flightless creatures, indicating their primary purpose was not flight but probably warmth or something. Then, they were adapted for flight- it's shit like this which makes molecular evolution really fun to learn about.
Evolution designed the first one too.
The one on the right, the left looks like a product of evolution
Someone call 911 and get OP an ambulance because he just got third degree burns over 80% of his body
The cells seem more complex because it's easier to make seemingly symmetrical forms at a small scale since it actually requires less information to encode in DNA and to construct. Stop being retarded
As a bacterial injector instead of a motor.
Don't forget to report OP
how can part of an organ be useful
The previous step of a flagellar motor isn't 9/10 of a flagellar motor, it's a smaller, shittier flagellar motor
kek, i love religion larpers