Let us now
examine in detail why the evolutionist scenario regarding
the formation of proteins is impossible.
Even the correct sequence of the right amino
acids is still not enough for the formation of a functional
protein molecule. In addition to these requirements, each
of the 20 different types of amino acids present in the composition
of proteins must be left-handed. There are two different types
of amino acids-as of all organic molecules-called "left-handed"
and "right-handed." The difference between them is the mirror-symmetry
between their three dimensional structures, which is similar
to that of a person's right and left hands.
| The same protein's left- (L)
and right- (D) handed isomers. The proteins in living
creatures consist only of left-handed amino acids.
Amino acids of either of these two types can
easily bond with one another. But one astonishing fact that
has been revealed by research is that all the proteins in
plants and animals on this planet, from the simplest organism
to the most complex, are made up of left-handed amino acids.
If even a single right-handed amino acid gets attached to
the structure of a protein, the protein is rendered useless.
In a series of experiments, surprisingly, bacteria that were
exposed to right-handed amino acids immediately destroyed
them. In some cases, they produced usable left-handed amino
acids from the fractured components.
Let us for an instant suppose that life came
about by chance as evolutionists claim it did. In this case,
the right- and left-handed amino acids that were generated
by chance should be present in roughly equal proportions in
nature. Therefore, all living things should have both right-
and left-handed amino acids in their constitution, because
chemically it is possible for amino acids of both types to
combine with each other. However, as we know, in the real
world the proteins existing in all living organisms are made
up only of left-handed amino acids.
The question of how proteins can pick out only
the left-handed ones from among all amino acids, and how not
even a single right-handed amino acid gets involved in the
life process, is a problem that still baffles evolutionists.
Such a specific and conscious selection constitutes one of
the greatest impasses facing the theory of evolution.
Moreover, this characteristic of proteins makes
the problem facing evolutionists with respect to "chance"
even worse. In order for a "meaningful" protein to be generated,
it is not enough for the amino acids to be present in a particular
number and sequence, and to be combined together in the right
three-dimensional design. Additionally, all these amino acids
have to be left-handed: not even one of them can be right-handed.
Yet there is no natural selection mechanism which can identify
that a right-handed amino acid has been added to the sequence
and recognize that it must therefore be removed from the chain.
This situation once more eliminates for good the possibility
of coincidence and chance.
The Britannica Science
Encyclopaedia, which is an outspoken defender of evolution,
states that the amino acids of all living organisms on earth,
and the building blocks of complex polymers such as proteins,
have the same left-handed asymmetry. It adds that this is
tantamount to tossing a coin a million times and always getting
heads. The same encyclopaedia states that it is impossible
to understand why molecules become left-handed or right-handed,
and that this choice is fascinatingly related to the origin
of life on earth.248
If a coin always turns up heads when tossed a
million times, is it more logical to attribute that to chance,
or else to accept that there is conscious intervention going
on? The answer should be obvious. However, obvious though
it may be, evolutionists still take refuge in coincidence,
simply because they do not want to accept the existence of
A situation similar to the left-handedness of
amino acids also exists with respect to nucleotides, the smallest
units of the nucleic acids, DNA and RNA. In contrast to proteins,
in which only left-handed amino acids are chosen, in the case
of the nucleic acids, the preferred forms of their nucleotide
components are always right-handed. This is another fact that
can never be explained by chance.
In conclusion, it is proven beyond a shadow of
a doubt by the probabilities we have examined that the origin
of life cannot be explained by chance. If we attempt to calculate
the probability of an average-sized protein consisting of
400 amino acids being selected only from left-handed amino
acids, we come up with a probability of 1 in 2400,
or 10120. Just for a comparison, let us remember
that the number of electrons in the universe is estimated
at 1079, which although vast, is a much smaller number. The
probability of these amino acids forming the required sequence
and functional form would generate much larger numbers. If
we add these probabilities to each other, and if we go on
to work out the probabilities of even higher numbers and types
of proteins, the calculations become inconceivable.
Britannica Bilim Ansiklopedisi (Fabbri Britannica Science
Encyclopaedia), vol. 2, no. 22, p. 519.