Protocells slowly developed specialized organelles, becoming more complex microbes that would eventually form eukaryotes – the complex, unicellular organisms that would birth a diverse array of life forms, from simple sponges to complex animals. Over time, RNA complexified into the more stable DNA. These precursor cells lacked a nucleus or other membrane-bound organelles, and they had simple genetic proteins called RNA. The first life forms on Earth were simple, single-celled microorganisms known as protocells. In this article, we take a look at the key developmental stages in the evolution of life on Earth that led to the emergence of Homo sapiens-us! From Protocells to PeopleĮvolution is the result of millions of minute mutations over millions of years, but the evolutionary process that created us can bucketed into a few key categories.

The story of human evolution is a fascinating one, stretching back in an unbroken chain over millions of years.įrom the tiniest protocells to modern humans, our species has undergone a remarkable journey of adaptation, innovation, and survival. The 4 Billion Year Path of Human Evolution

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