Here is an essay on ‘Genetic Variation’ for class 9, 10, 11 and 12. Find paragraphs, long and short essays on ‘Genetic Variation’ especially written for school and college students. Essay on Genetic Variation Essay # 1. Meaning of Genetic Variation: Evolution requires genetic variation. If there were no dark moths, the population could not have evolved from mostly light [...]
In this article we will discuss about the mechanisms that decrease and increase genetic variation. Mechanisms that Decrease Genetic Variation: i. Natural Selection: Some types of organisms within a population leave more offspring than others. Over time, the frequency of the more prolific type will increase. The difference in reproductive capability is called natural selection. Natural selection is the only [...]
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 [...]