Over twenty years ago, studies made by geneticists hinted at
an incredible and unbelievable explanation for the origin of man kind. By
tracing the trails of DNA left behind in multiple regions in the world,
gathering samples from various different races and isolated indigenous tribes,
scientists came up with a theory that all races of humans we know today
originated from one location in mid-south Africa. Only after extensive
research, and numerous DNA samples, have scientists been able to confidently
publish their new founding. This new theory, as irrational as it sounds, after
numerous experiments conducted was found to be more plausible and reasonable than
the old theory of many different species of homosapiens in different areas and
interbreeding.
Gathering such extensive data was difficult. It is an
arduous task to travel to remote regions of earth and meet with indigenous
tribes that have little to none outside contact. Many tribes even refused to
cooperate, as they were suspicious with why scientists were drawing blood
samples from and gathering DNA samples from their saliva with a cotton swab.
The long standing opposing theory to the “out-of-Africa”
theory is called the Multiregional theory. To this day, many scientists still
believe that homosapiens developed in different regions, adapted to their
surroundings, and interbreed to preserve their race and create many different
features of early humans. People argued that a large percent of the population
is a result of this interbreeding, not from a single stemmed African species.
The debate continues onwards, however, more and more genealogical evidence has
been discovered to support the out-of Africa theory.
Perhaps the one obstacle that has troubled scientists most
is the lack of physical evidence. A DNA trail clearly shows that traces of DNA
and microorganisms were left behind during the migration out of Africa.
However, there hasn’t been any fossils/prehistoric tools found on these trails,
leading many scientists to question the validity of this theory. However,
fossils are usually incredibly difficult to find, and many scientists argue
that fossils or physical evidence is inapplicable in this particular research.
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