- #246
byronm
sganesh88 said:A related doubt. Suppose an organism develops a trait- say a random mutation in one of its cells that enabled it to turn itself into a photoreceptor-. Now how does Nature 'know' that it will help the organism in its survival and hence make it carry on to the future generations through inheritance? Whats the mechanism of this natural selection?
Sorry if its a stupid question. This question is bugging me these days.
Think of it this way, give a man a fish, he will eat a fish that day, teach a man to fish and he will eat fish for life.
Same goes for evolution, with the exception that the teaching part is mostly a lonnnnng process of natural selection over the years.
If you have cell a that develops a method to be aware of daylight or not vs cell b of a similar composition with no ability to sense daylight, cell a could essentially conserve its energy by feeding during prime food times by using its sensor in conjunction with the abundance of food to have a more resourceful uptime vs cell b who is actively trying to eat all the time. Over the millions of years cell b is simply overrun by a and natural selection prevails.
Its not really that the cell "a" would even know what to do with the mutation initially but the mutation over time allows it to infer conditions that species "b" can't.
hopefully i didn't butch that up for you too much. just a simple way to describe what may happen.