Religious people who can't find any scientific answer for it say that God did this....I don't deny that God or the ultimate energy or whatever you call it might have indirectly did this. However, I am a scientist and it's my job to see everything scientifically. But this is one of those things that I can't find any answer for. At least not yet. How did they do it? Or better use a present tense: How are they doing it?
It needs so much brain and thinking to create those patterns, and it is difficult to believe these animals' and insects' brains are strong enough to calculate and be so much creative to shape up those patterns or build bones to change the skeleton of the animals. This is something that we still haven't found any answer for!
the same goes for the fish who wanted to walk out of the water and step on the soil in the dinosaur era, long before the Jurassic's. I remember this quote from a dinosaur book that I asked my parents to buy for me that ' the fish developed legs because they wanted to walk out of the water, and the lizard-dinos developed wings because they wanted to fly'. The book used the verb 'to want' in the sentences.
So If you want it you will get it?
The other question is how many generations of a eukaryotes need to be born until the ancestor gets what he desired ages ago? lol. For prokaryotes this is what happens almost very quickly. Ever heard how bacteria become resistant to a certain antibiotic? This is what we face routinely in the lab. After some passages the bacteria become resistant. However, at the bacteria level we know this activity as a mass-biochemical reaction that bacteria develop to survive. Bacteria don't have brain to think, so obviously this is done by the biochemical reactions to create that antibiotic-resistant gene. Ask any biologist and they will explain this for you. But what about the bigger animals?
The bacteria don't even have the brain to 'want'. Do we need a brain to develop new strategies to carry on with life? Or are we underestimating animals, insects or even bacteria? maybe they are more complicated than what we thought they are. Maybe 'wanting' is a biochemical reaction that in eukaryotes it looks different.
So if you want it you will get it!? we are not sure if this is really true, this is a theory. But let's be on the safe side and 'want' the things we need in life! Perhaps 'The Secret' was right all this time? Maybe not only our body follows our desires, but also the universe hears us.
This also reminds me of the Mikel Anjelo's painting. Maybe, God is our brain?
