The theory of evolution is one of the great intellectual revolutions of human history, drastically changing our perceptions of the world and of our place in it (1). The theory of evolution states that all lifeforms on earth share a common ancestor as a result of variation and selection over a long period of time (around 4 million years) (2). Variation means that offspring are not exact copies of their parents and selection occurs when only some of those offspring go on to reproduce their own kind(2). The theory of evolution is seen as the main overarching theme that tie many topics of biology together such as Genetics, Population Biology, Anatomy and Physiology, Embryology and many more(3). The theory has evolved and expanded over time, however some of the base principles still hold true today.
Darwinism? Charles Darwin?
Charles Darwin was one of the first to put forward a coherent theory of evolution known as Darwinism with a body of evidence …show more content…
The struggle for resources from one generation to another will favour individuals with some variation over others and will cause a change in the frequency of traits within a population (1). This is the process of natural selection. In order for natural selection to occur, the trait of an organism must possess heritable variation and must have the advantage in the competition for resources and only then will the trait of the organism experience natural selection (1). As said by Charles Darwin in his book “ natural selection acts by competition for resources, it adapts the inhabitants of each country only in relation to the degree of perfection of their associates” (1). The theory of Darwinism has become more sophisticated through the understanding of DNA and genetics due to the advances of modern world