Environment factors affect evolutionary change Essay

Environment factors affect evolutionary change - Essay Example As there is more selection of a particular trait that is inherited by the species, there is more regression. In the case of no heritability, there is no regression as new variations are produced. In reality, what usually happens is something that is a middle path. This can be seen in the experiment that is seen in Evotutor. Here, when the parameter of selction is placed at five, that of regression is 3.25. however, when the parameter of selection is reduced to 3.0, that of regression reduces to 1.95. This enables a better understanding of the ways in which selection works. Variation is another aspect that is changed through the ages and leads to evolution. When there is greater variation in a society, there is greater change in the following generations of the species. When there is very less variation, the reverse happens. However, another important aspect of this is the way in which the variations are distributed. If a large part of the variations happens in the case of a particular trait, then evolution and selection would proceed in that direction, leading to the development of subspecies and then different species altogether. This can be seen in the histogram that Evotutor provides. When the level of variance in a society is placed at 125, the division between different colors reads different numbers where the variations within the population are divided into different permutations and combinations. This is seen in the constant change that the graphic shows while analyzing the data. However, when the level of variance is increased to 720, the var iations within the populations are much more diffuse. No single variation has a hegemony and this can be seen in the constantly changing leader in the

British literature with 3 choices for the topic Essay

British literature with 3 choices for the topic - Essay Example The natural world becomes, strangely, an unnatural and supernatural one inhabited by monsters. The terror of the unknown is common not just to the Norsemen, but to all men, and the intangible menace invoked by the supernatural reaches out of the text and grips the reader as well. Society in Beowulf has its core in the hall, not unsurprisingly called ‘Heorot’, meaning ‘heart’. The hall is surrounded by the hunter-gatherer village structure of women and huts, representing the outer periphery of society. Beyond lay the unknown – swamps and wilderness denoting the other, outer world where Grendel lives, unable to access Heorot and the social affection and bonding within. He can only watch from afar. The ‘Loathly Lady’ is a common motif found in literature extending back to Celtic and German mythology and Arthurian legend. The lady is portrayed as an ugly old hag a young and handsome knight has to consummate marriage with. When the deed is done, the crone is transformed into a beautiful, youthful maiden, who informs her husband that he can choose her to be beautiful and false or ugly and true. By letting his new wife make the decision herself, the knight frees her from the spell, and she is now fair and faithful. In the Irish tradition, the loathly lady has been thought to personify the sovereignty of the land, the parallel being that whoever submits to the prophetess kingmaker and her wishes will become the ruler of the land. The ‘lady’ is shown as different from the norm, both in the magical forms that she takes, as well as her behavior. Both Alysoun, in the prologue to The Wife of Baths Tale from Chaucers Canterbury Tales, as well as Dame Ragnelle in the tale itself, go against the accepted norms of society. Alysoun is much married and holds forth views on virginity, for instance, contrary to the established mores of the time. Ragnelle’s rude manners at the feast scandalizes all, but must be accepted as she is now wed to