The Effects of Races on Human Evolution
Human evolution had its effects on our knowledge. Throughout the years many researched were done on the effects of human races on our knowledge. According to the data collected they predicted that both technology and Fossils gave us information about the ancient human races. Technology plays a huge role in giving us more information about the changes in human genes, and their effect on the human races. Genetic analysis is basically comparing the DNA of people from all over the world (Adams, 2008).
A human genome is 3 billion letter; each person has his own genome that makes him different from other people. These differences helped them in knowing more about the human races, but this technique took a lot of time. However, with the new technology they discovered a new way to read genome, by breaking up the DNA and sequence it again to create a new genome (Busby, 2016). This technique helped in knowing more about human races genes, and how they changed over time. Recent genetic studies showed that differences between 2 entities from 2 different races is similar to 2 entities from the same race. Moreover, efficient genetic information helps in categorizing a fossil to a specific race (Witherspoon, 2007). Recent genetic analysis showed that at the recent 2,000 years, many genetic changes happened because of the expansion that Mongols did when they left Asia and settled in eastern Europe (Introduction to Human Evolution, 2017). This move led to these two species sharing their DNA. These confusions also led to developing more ways to know more about these human races, and their DNA. With the new ways they discovered, Genome Analysis and DNA sequences, had all these confusions to be understood.
Ancient DNA gives us a lot of information about races that lived in earth million years ago. For example, a recent genetic study showed that the blue eyes came from species in Europe, and the pale skin came from species in the middle east. On the other hand, Fossils also play a role in giving us information about the human races. For example, Oldest DNA sequenced from a fossil showed that the non-Asian ancestors and the Neanderthals lived together (WADE, 2014). Moreover, another study of DNA of the fossils that were found showed the number of human races that lived in earth before our race and they are: Homo Heidelbergensis, Homo Rudolfensis, Homo Abilis, Homo floresiensis, Homo erectus, Homo Neanderthals, Homo spanies (Adhikari, 2014).
Certain Scientists predicted that the human ancestors can be traced back to Africa, and many fossils were found there between Ethiopia and Tanzania. Using these fossils many scientists tried to understand the human physical and cultural origins and they succeeded in revealing our genetic structure throughout their studies. Using similar methods of relating genetic variation, it was forecasted that all people living today are sharing a common genetic ancestor.
Climatic changes and their effect on the ancient human races: Climate changed over time. The changes in climate had a huge effect on the human evolution. They affected them in the way of their adaptability and migration. For example, 200,000 years ago Eurasia was covered with ice, when this ice started to melt, people suffered from humidity, and this led to an enormous number of people, mammals, and plants ending up dead (Evans, 2012) Recent Studies showed that people who lived in risky places where the food was scarce, usually adapted new tools to survive not having enough food and living in a bad weather (Climate Effects on Human Evolution, 2016).
On the other hand, people who lived in rainforests didn’t face these problems. Food was available, the weather was good, there was no risk in living in this area. This shows how risky environment led these races to develop new tools to survive. Climate didn’t only effect the adaptability of these species but it also effected their brains and social behavior. Although climate had its negative impact on people by killing an enormous number of species, but it had its positive impact (Handwerk, 2014). Climate made people develop new tools to survive, and this developed their mental skills. However, the negative impact is way more that the positive impact of these climatic changes. The data that was collected helped the scientists to build predictions. These predictions showed that Humans lived in uncertainty. Moreover, they linked many evolutionary incidents to these climatic changes (Watts, 2017).
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