Saturday, 24 March 2018

Understanding Darwin Theory of Evolution

The theory is all life is related and has descented from a common ancestor. His general theory is that complex creatures evolved from more simplistic ancestor over a  genetic mutations occur within an organism's genetic code, the beneficial mutations are preserved because they aid survival -- a process known as "natural selection." These beneficial mutations are passed on to the next generation. Over time, beneficial mutations accumulate and the result is an entirely different organism (not just a variation of the original, but an entirely different creature).

Ancient Greek philosophers such as Anaximander postulated the development of life from non-life and the evolutionary descent of man from animal. Charles Darwin simply brought something new to the old philosophy -- a plausible mechanism called "natural selection." Natural selection acts to preserve and accumulate minor advantageous.

Natural selection is the preservation of a functional advantage that enables a species to compete better in the wild.

Darwin's Theory of Evolution is a slow gradual process. Darwin wrote, "…Natural selection acts only by taking advantage of slight successive variations; she can never take a great and sudden leap, but must advance by short and sure, though slow steps.

Thus, Darwin conceded that, "If it could be demonstrated that any complex organ existed, which could not possibly have been formed by numerous, successive, slight modifications, my theory would absolutely break down."

Such a complex organ would be known as an "irreducibly complex system". An irreducibly complex system is one composed of multiple parts, all of which are necessary for the system to function. If even one part is missing, the entire system will fail to function. Every individual part is integral.

Thus, such a system could not have evolved slowly, piece by piece.

The common mousetrap is an everyday non-biological example of irreducible complexity. It is composed of five basic parts: a catch (to hold the bait), a powerful spring, a thin rod called "the hammer," a holding bar to secure the hammer in place, and a platform to mount the trap. If any one of these parts is missing, the mechanism will not work. Each individual part is integral. The mousetrap is irreducibly complex.

Darwin's Theory of Evolution is a theory in crisis in light of the tremendous advances we've made in molecular biology, biochemistry and genetics over the past fifty years. We now know that there are in fact tens of thousands of irreducibly complex systems on the cellular level.

Specified complexity pervades the microscopic biological world. Molecular biologist Michael Denton wrote, "Although the tiniest bacterial cells are incredibly small ,weighing less than 10-12 grams, each is in effect a veritable micro-miniaturized factory containing thousands of exquisitely designed pieces of intricate molecular machinery, made up altogether of one hundred thousand million atoms, far more complicated than any machinery built by man and absolutely without parallel in the non-living world."

If only the advances in genetics had been made in tandem with his work on evolution.

Darwin theory of evolution has been proved correct many times over.  Taken in to account that people in that time did not believe in evolution.  Darwin own research and studies helped him to come up with his theory of evolution.  The why question came into play.  Thinking out of the box has proofed useful to many that follow Darwin evolution theory.

Take the jelly fish. It one of the oldest still living on earth from 550 million years ago.

Keys of jellyfish evolutionary success revealed.
Researchers have revealed the evolutionary keys of the jellyfish in a new study. The research reports how the jellyfish has evolved with an increase in the amount of water in its tissue; this process has allowed the jellyfish to become bigger and more gelatinous and also to be an exceptionally efficient hunter.

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