Life evolved in the sea. It stayed there for the majority of the history of earth. The first replicating molecules were most likely RNA. RNA is a nucleic acid similar to DNA. In laboratory studies it has been shown that some RNA sequences have catalytic capabilities. Most importantly, certain RNA sequences act as polymerases — enzymes that form strands of [...]
Evolution is not progress. The popular notion that evolution can be represented as a series of improvements from simple cells, through more complex life forms, to humans (the pinnacle of evolution), can be traced to the concept of the scale of nature. This view is incorrect. All species have descended from a common ancestor. As time went on, different lineages [...]
Here is an essay on ‘Evolutionary Theory’ for class 9, 10, 11 and 12. Find paragraphs, long and short essays on ‘Evolutionary Theory’ especially written for school and college students. Essay # 1. Introduction to Evolutionary Theory: Biology came of age as a science when Charles Darwin published “On the Origin of Species.” But, the idea of evolution wasn’t new [...]