Recent discoveries in Ethiopia have supported the theory that human beings evolved in East Africa. These findings are consistent with previous genetic studies and support models that suggest refugial networks during times of climatic instability. However, some genomic analyses suggest a different geographic pattern for the origins of modern humans. While there is some evidence to support the southern African origin, there is no firm scientific evidence that would suggest this. Nevertheless, the current geographic distribution of hunter-gatherer populations suggests this.
In nature, natural selection still has the most dominant role, and the principle of survival of the fittest applies to human beings. Our genomes contain all the genetic instructions we need to build an organism and grow. Natural selection, on the other hand, is responsible for the gradual changes in our characteristics over successive generations. The physical characteristics of members of the same species tend to be similar. As a result, we can trace our ancestry to ancient human populations.
Biological and cultural evolution are both based on variation and heredity. Both processes are unconscious and not goal-directed. Biological sources of variation include genetic recombination and mutations. Heredity refers to a person’s genetic material and reproduction, while selection operates in natural selection and sexual selection. In the past 60,000 years, people first migrated to Australia. This period of time also saw the emergence of first civilizations.
