by Wojciech Konrad
Kulczyk from NexusMagazine Website
of human development give strength to the argument that life on Earth originated elsewhere in the cosmos...
It evolved from the
primordial soup theory to the present-day RNA World hypothesis. It
is possible that it could be shown that some components of life
could have originated from inorganic matter but proving their
transition to the living cell would be much more difficult.
An integral control system, constructed using biochemical and genetic logic circuitry, organizes the timing of initiation of each of these modular functions, similar to electronic control systems designed by man.
This control system is not coded by the cell DNA but is inherited from the mother cell.
Since genes are not
involved with the cell structure and its control system, it is
difficult to envisage how abiogenesis could be responsible for the
origins of life.
Hoyle and Wickramasinghe 4 confirmed that life could have come from the cosmos and further research shows that bacteria and even higher organisms could have survived a journey through space.
Since these proposals,
molecular and genetic research has shown that life is far more
complex than was ever suspected and panspermia is becoming a serious
alternative to the theory of evolution.
It is assumed that Latest Universal Common Ancestor, LUCA, which existed about four billion years ago, was a very sophisticated organism having between 500 and 1,000 genes and fully developed photosynthesis and respiration systems.
After the seeding of Earth, it was assumed that life developed further as a result of evolution.
Since it is doubtful that Darwinian evolution was responsible for the generation of complex organisms which needed thousands of beneficial mutations, it was proposed that strong panspermia 5 could be responsible for further development.
Panspermia provides plausible explanations for the origin of life and the arising of eukaryotic cells on Earth.
However, there are two milestones in the development cycle of intelligent life that might be difficult to explain using simple panspermia.
These two milestones are:
During the 20-million-year period there appeared such different classes of animals as,
These animals did not
arrive in sequence from simple to more complex forms, but turned
up almost simultaneously...
animals during the Cambrian Explosion.
In comparison with eukaryotic cells, new organisms had tens of thousands of new proteins and their genome was considerably increased to approximately 20,000 genes.
Besides these organs, more advanced animals had eyes, a brain, a spine and various sensors.
The whole process is controlled by Hox genes. 7
These genes provide the overall layout of the body, defining the position of the main parts such as the,
Each of the Hox genes switches on other genes which provide more detailed information about the position and structure of different tissues needed to make these parts.
Eventually the position and type of almost every cell in the body must be specified.
If we consider that
organisms consist of trillions of cells, the
embryo development control system is extremely complex, and has been
since the earliest animals.
The embryo development
control system had to have been introduced as a complete unit
because even small genetic deviations would have resulted in
detrimental results.
Therefore, the mechanism
of simple panspermia could not have been responsible for such
developments.
The dating of this event is supported by the earliest human fossils from this period and the mitochondrial DNA inherited through the maternal line.
Results from new studies confirm that Neanderthal and human genomes are more than 99.5 per cent identical, differing by about 3 million bases.
This would indicate a
significant separation between these two groups.
It is assumed that Homo heidelbergensis that lived in Africa, Europe and western Asia between 600,000 and 250,000 years ago is the ancestor to not only Neanderthals but also H. sapiens, but there is no genetic evidence to confirm this.
H. heidelbergensis looked
very similar to Neanderthals but was significantly different from H.
sapiens.
Because there is no indication who our direct ancestors were, a hypothesis was proposed that H. sapiens continuously evolved over several hundred thousand years. 11
However, there is no
fossil evidence supporting this hypothesis.
This shows that the origin of humanoid species is much older than recognized by mainstream academia and there is no clear line of progression from less developed to more advanced hominids.
What distinguishes us from the animal world is our unique brain.
The functioning of the human brain is an extension of the operation of the animal brain which has been developed since the Cambrian explosion.
The human brain has several functions common to mammals such as vision, hearing and positioning system. 13
However, the human mind
has several very special properties such as
consciousness and logical and
abstract thinking which distinguish it from the animal brain.
There are two clusters of hundreds of individual genes that are thought to influence all our cognitive functions including:
The genetic study of Neanderthals shows that, in genes responsible for making proteins, 87 differ from those found in modern humans. 14
Some gene differences are involved in both the immune responses and the development of brain cells.
One can assume that H.
heidelbergensis had a less developed brain than Neanderthal man,
therefore there must be an even bigger difference between the brains
of H. heidelbergensis and H. sapiens.
Our understanding of embryo development is that thousands of new genes and gene control substances were involved in the development of higher organisms.
Also, it is difficult to envisage the partial development of the pyramidal structure of the Hox gene control system and this indicates that the architecture of the control system would have to have been developed as a complete operational unit.
It looks as though such a
system would not have been able to be generated by evolution or
strong panspermia.
It is possible that intelligent life on Earth is the result of,
This experiment would have involved seeding Earth with the first cells to prepare the Earth's biosphere for supporting more complex life.
It is possible that the Cambrian explosion started when the embryos of all phyla were sent in special containers suitable for space travelling. Since all life was water based, such embryos placed in water or ice would be protected against radiation.
Such transport could have been used in the further development of water-based animals but would not be suitable for land-based animal embryos.
The development of land-based animals would have taken place via genetic modifications of germ cells, which are normally placed inside animal bodies.
Such modifications could have been achieved by internal genetic variability mechanisms which exist in chromosomes or by suitably engineered viruses.
It is possible that
transposons played a significant
role in this development process. 17
It is possible that the development of early hominids progressed using specially designed viruses or other genetic modifications. Tattersall believes that at least 20 hominid species existed during the last several million years.
He says:
This process produced many different groups of apelike and humanlike beings.
According to Cremo and Thompson, there is overwhelming evidence that,
The existence of so many hominid species which disappeared without a trace indicates that the brain modification methods used were not very successful.
The problem was that
while the upright body was easily implemented, the development of
the brain was much more difficult. Brain modification requiring
changes to hundreds of genes needed very precise genetic
manipulations.
The Neanderthals had a very large brain 19, about 1,600 cubic centimeters, but still its performance was far from what was needed.
A possible solution was,
The proposed scenario is that the H. sapiens embryo was produced by in vitro fertilization and was implanted in a suitable surrogate mother.
In that way, it was
guaranteed that new genes were introduced and all unwanted or
harmful genes were removed or modified.
This could explain why about two per cent of the DNA of people with European ancestry can be traced to Neanderthals, while some other ethnic groups can have up to six per cent of Neanderthal genes.
The hypothesis of the involvement of extraterrestrial civilizations in the arising of intelligent life on Earth, should be considered because the existence of such civilizations is an accepted hypothesis as shown by the SETI program which searches for alien signals.
This search has not brought any results because we assume that these civilizations are similar or only slightly more advanced than ours.
However, it is not
unrealistic to assume that extraterrestrial civilizations could be
several million or maybe even billions of years old,
therefore their capabilities would be much more advanced than ours,
making them very difficult to contact.
Work performed by sh. Cherback and Makukov shows unexplained properties of DNA codes which would require some intelligent approach that cannot be accounted for by Darwinian evolution.
They say that,
A particular property of the human brain which could not have arisen as a result of simple genetic modifications is,
This development is most visible in the domain of consciousness.
It is known that the genetic makeup of the human brain has not changed for the last 6,000 years, but we observe significant development of human thinking and consciousness, for example concern about the environment, climate change and the Earth's future.
This shows that the human brain has built in a function enabling further development which is not based on genetic or evolutionary mechanisms.
Therefore one could predict that the development of the human race will result in a more humanitarian society. Looking at the present state of the world we might be under the impression that things are getting worse.
However, if we compare
our present situation with the situation a hundred years ago we can
see tremendous progress in practically all aspects of our lives.
However, implementing this design in human beings would require the direct contact of extraterrestrials with Earth.
It is difficult and maybe unwise to speculate about the extraterrestrial civilization.
|