Who
came first, Indians or Europeans?
Sunday, October 04, 2009 2:12:00 AM
K V Ramana / DNA
We often talk and worry about brain drain, where the brightest
Indians move out of the sub-continent, generally to the
West, seeking better opportunities. However, it may turn
out that this is hardly a new trend.
Geneticists at the Centre for Cellular and Molecular Biology
in Hyderabad released a study last week which suggested
that the Indian population has its origin in migrants from
Africa who arrived here 45,000 to 65,000 years ago. The
next stage of the study, they say, will explore whether
Europe got populated by migrating Indians. This will go
against the belief that in ancient times, humans moving
from Europe populated India.
Earlier studies published in 2005 have established that
the mega droughts in East Africa had forced the population
there to migrate to greener pastures some 75,000 years ago.
The migrant Africans are believed to have taken the southern
coastal route to reach India. The currently prevailing view
is that the original inhabitants of Africa followed a northern
route of migration via Middle East, Europe, south-east Asia,
Australia and then to India.
In addition to these findings, CCMBs recent research
has shown that todays sub-continental population originated
from two groups of ancestors: Ancestral North Indian (ANI)
and Ancestral South Indian (ASI). While the ASI entered
from the south, the ANI entered India from the northern
region.
We are now going to answer several key questions
going forward, says Dr Lalji Singh, former director
of the CCMB and a senior scientist on genetic research.We
are always told that people from different parts of the
planet migrated into India. But we were never told that
people from India, too, had wandered out. The ANI have similarity
to Europeans and to Iranians. When you look at the origin
of the Indian population, the Onges in the Andaman Islands
are dated to about 65,000 years ago, and the European population
is dated to 40,000 years ago. So the question of Europeans
coming to India does not arise.
The ANI must have given rise to the European population.
We would now like to confirm this, he says.
Though the scientists now seem to have enough evidence
to prove that the Europeans have their origins in India,
there are a couple of questions that need to be answered
first. There is a possibility that the Europeans had a common
ancestor like the ANI. If this is disproved, then it will
add strength to the argument that Indians populated Europe.
Implications for medical research
According to Singh, some genetic disorders can be treated
in a better manner if what well be working on
in the next three years gives all the desired results.
Indeed, more information about the nature of the Indian
genome would aid bio-technology research to streamline treatment
for genetic disorders that are more prevalent among than
Indians in other populations.
There are two types of genetic disorders. The recessive
diseases are those that do not show up in a person though
one of the two genes (from the father and mother) has some
defect. But a dominant disease shows up if either of the
two genes have any defect. So, the recessive disease remains
hidden. The genetic studies of smaller groups, tribes
and castes in the country will give us a clear idea on the
hidden (recessive) diseases. Similarly, we can look for
better treatment for the yet-to-be born child, he
said.
India was neglected all these years. Scientists in
western countries normally study Europe, America and Russia
and for them that is the whole world. Any theory they make
is based on the findings in these geographies. From our
studies they have now realised their blunder. India is a
melting pot and I am sure many countries and continents
were populated by India. It (our study) is going to rewrite
both science and history, Singh said.