How can a single cell organism evolve when they lack the competition and fitness of which Darwin speaks?
Godfather Part II May 22nd, 2006 This is one of the biggest questions in biology. Essentially, how did life first begin. To answer this question is ten times harder tha explaining the whole of evolution! The simple answer is- we don’t completely know. But I’ll try to explain the ideas we do have… There are three key \”elements\” of life, DNA (or RNA as it was a first), lipids (essentially these are a form of fats) and amino acids (which join to form proteins). If we can explain how each of these can arise naturally, without any creative force then it becomes easier to explain the origin of life itself. 1) RNA. This has three components, ribose sugar (deoxyribose in DNA), phosphate groups and organic bases (ACUG in RNA, ACTG in DNA). The ribose sugar and phospahte groups alternate to form a long chain or \”back bone\”, and a base is attached to the ribose sugar. The creation of phosphate is easy to explain. It is a very common natural compound. It consists of Phosphorus, Oxygen and Hy
