Thursday, April 11, 2013

Dates of Early Human Migration Redetermined

In the article, Clocking
the Human Exodus Out of Africa
, the migrations of early humans was traced
through DNA and ancient fossils. According to genetics, the mutation rate of DNA
estimated that humans migrated out of Africa much before the time estimated by
the fossils. After testing DNA from 40,000 year old mitochondria, scientists
concluded that the mutation rate of humans changed over time. When the new
genetics data was collaborated with the archeological evidence, the date the
humans migrated out of Africa was found to be 62,000 to 95,000 years ago. The
time when humans migrated out of Africa is a very important date in human
history. The more accurate we can find the time to be, the more we will know
about ancient human history. If we know when people migrated, we can determine
what we have lived through, such as ice ages. Genetics can not only determine
when humans migrated, but it can also determine where they originated. An
article in Science Daily

[caption id="attachment_7787" align="alignright" width="276" caption="General Migration Patterns of Early Humans"][/caption]

states that:
Using mitochondrial DNA analysis, which traces the female
line of descent and is useful for comparing relatedness between different
populations, the researchers compared complete genomes from Arabia and the Near
East with a database of hundreds more samples from Europe. They found evidence
for an ancient ancestry within Arabia.

With advances in science, scientists continue to calculate a
more accurate time and place for the migration of humans out of Africa.

1 comment:

  1. That’s interesting new data. This reminds me of the film "The journey of man" which brought up the question a one common ancestor, but that’s as far as I’ll go with that. But it'd be very interesting to determine what early humans have lived through.