The Origin Of Diversity Within Species - 1361 Words

According to Charles Darwin, he suggested that all organisms were descendants from a common ancestor that was once existed in the past (Darwin 1859). As organisms share a lot of common characteristics due to common ancestry, the history of evolution of different species can be known through comparing how closely their genes and body structures were. The more similar those characteristics are, the more closely related those species is. However there is a wide range of diversity between every single species and between every single individual. Diversification allows organisms to occupy different niches in the ecosystem. In this essay, the origin of diversity within species, the origin of diversity between the species, the significance of†¦show more content†¦Every single individual will not be genetically identical unless they are identical twins. Variation within individuals could be caused my crossing over or independent assortment during the process of fusion of two gametes . !!!! Origin of diversity between species A common ancestor gave rise to all organisms on earth. However, every individual species developed their own distinct character that allows them to play a specific role in the ecosystem. Diversity is caused as species are being isolated by geographic barriers or by sexual selection. The diversity between species can be present as there is a difference in the species heritable trait. Those organisms that contain an advantageous allele that allows them to be better adapted to the environment survive and reproduce. As a result, the advantageous allele will be inherited by the offspring and the frequency of the advantageous allele will increase within the population. In the example of Strepsirhini, it was one of the linages that was evolved form the earliest primates together with tarsiers (e.g. monkeys and apes) (Hickman, et al. 2011). When Madagascar was separated from the southeast coast of Africa at about 120million years ago, the Madagasy prosimians where separated from the rest of the population of apes and monkeys. The Madagasy prosimians where geographically isolated form the rest of the primate populationShow MoreRelatedDiscuss the origin and significance of diversity within and between species in a named taxonomic group of your choice(Ants).1888 Words   |  8 Pages150 million years ago(2006 Chuck Lydeard)1. Due to their long ecological dominancy amongst insect and short life span they have undergone a high rate of adaptive radiation. Leading to a reasonably large amount of species and inter- species diversity. There are at least 12000 different species of Formicidae (2008 Edward O. Wilson)2 which have colonised almost every landmass on the planet(Alice S. Jones 2006)3 This unique dominancy and prevalence means that Ants presently account for an incomparable 15Read MoreThe Origin And Significance Of Diversity Within A Named Taxonomic Group Of Your Choice1264 Words   |  6 Pagesthe origin and significance of diversity within and between species in a named taxonomic group of your choice.† The stability of biodiversity over millions of years of evolution has been one of the most persistent puzzles of ecology and evolution (Hutchinson, 1961). Different species had evolved from their ancestral and were not created in their present forms (Darwin, 1859). This essay will explore how diversity arises within andRead MoreCreationism And Evolutionism - Explaining Life1344 Words   |  6 PagesCreationism and Evolutionism – Explaining Life Imagining the whole world, it seems to be a sheet made of small pieces of different tissues. The countless diversity of species existing in the world makes everyone think about how all species appeared. So, some scholars became interested to explain how the species originated, and then they began a diligent study around this topic. Consequently, some theories such as Creationism and Evolutionism have arisen and started a big debate to highlight theirRead MoreNatural Selection Paper1502 Words   |  7 Pagesthe most important processes for a variety of species and the environment which allows the fittest organisms to produce offspring. To prevent a species from extinction, it is necessary for them to adapt to the surrounding environment. The species which have the ability to adapt to new surroundings will be able to pass their genes through reproduction. Within the process of natural selection, it is possible for the original genetic make-up of a species to become altered. The team w ill report on theRead MorePhylogeny Is The Study Of Evolutionary Relationships1395 Words   |  6 Pagesintroduced as a method of phylogenetic analysis. A phylogenetic tree made in the manner of cladistics that connects ancestors to descendants is known as the tree of life. Charles Darwin completed the first known drawing of a tree of life in his book ‘Origin of Species’. Unrooted trees can be made, but these are not as useful as they simply connect descendants and do not plot a common ancestor. Phylogeny is linked to taxonomy – the hierarchical classification of organisms. The groups represented in the treeRead MoreSources Of Environmental DNA1530 Words   |  7 Pagesprecisely, intraorganismal eDNA describes microbe and small organisms living in the soil, water or air, whilst extraorganismal eDNA include shedding cells or faces dispersed in the environment (Turner et al, 2012). Traditional methods of crayfish species detection are often time-consuming, costly, potentially dangerous to the organism (electrofishing) and often the collection of data can miss accuracy (Qu and Stewart, 2017). eDNA is a potentially powerful tool in inaccessible habitats or in combinationRead MoreCharles Darwins Theory of Evolution by Natural Selection Essay1027 Words   |  5 Pagescame to the same conclusion. Wallace being relatively unknown was not respected for having the same conclusion because the fact that people were so apt to listen to the theory’s of Charles Darwin. After time Darwin published a book On the Origin of Species, and it was a big success: it’s first printing sold out immediately and a second printing sold out a month later. Darwin’s Theories found their way out of the scientific world and into the business world, eventually ending up in everyday societyRead MoreRealistic aquatic and terrestrial ecosystems are constantly adapting to v arious disturbances of600 Words   |  3 PagesRealistic aquatic and terrestrial ecosystems are constantly adapting to various disturbances of anthropogenic and natural origin. According to the â€Å"Alternative stable state theory† ecosystem has various states and can switch from one state to another when ecosystem conditions are changing (Holling, 1973; Scheffer, 2001). When the magnitude of such disturbance is negligible, the shift in the ecosystem structure and functioning does not occur. In this case the ecosystem resilience allows it to returnRead MoreThe Human Acquired Immune Deficiency Syndrome Essay770 Words   |  4 PagesAIDS is characterized by two single stranded RNA and uses enzyme reverse transcription to integrate into the hosts DNA. The AIDS virus is transmitted through sexual activity with someone that is infected with the virus. HIV has the most genetic diversity seen in viruses. HIV enters the immune system through bodily fluids from an infected party. Upon entering the body the virus (two single strand RNA strands) it replicates using reverse transcription to get into the DNA. HIV favors entering cellsRead MoreAvian Influenza Diseases1062 Words   |  5 PagesOrigin and Mutations Avian influenza A (H7N9) is thought to have arisen from gene reassortment of multiple avian virus lineages. Hemagglutinin (HA) gene segments from H7 influenza viruses were determined to come from migratory wild ducks along the East Asian flyway encompassing Eastern China, South Korea and Japan [19]. Between 2009 and 2010, H7 virus strains were found in domesticated duck farms in Jiangxi province, China and then subsequently in market birds (chickens). The strain persisted for