Human Evolution Affected By Hybridization Of Modern Humans...

Human Evolution Affected by Hybridization of Modern Humans and Similar Human Species The evolution of humans is known to be very complex and recently scientists have been discovering just how complex through molecular data. Learning that the vertebrate eye took 400,000 generations to evolve sparked my interest in understanding human evolution. A recent article on BBC claims that at one point in the timeline of human evolution, the species Homo sapiens, which is the modern human species, interbred with Neanderthals and Denisovans (Hogenboom, 2015). Neanderthals are the modern human’s closest extinct relatives and are a species with short, stocky bodies that helped to adapt to cold weather. Denisovans are organisms that lived in caves and are also closely related to H. sapiens. Specifically, the article says that ancestors from Europe and Asia have at least 1-4% of Neanderthal DNA and those with ancestors from Southeast Asia have up to 6% of Denisovan DNA. But more importantly, the article makes the claim that the modern human species is a result of hybridizatio n of multiple human species (Hogenboom, 2015). As a result of understanding the science behind the interbreeding of humans with other closely related species, I will be able to see how hybridization plays a role in evolution of a species. The discovery of molecular data of various human species has allowed for a clearer picture of the lineage that led to the modern human species. An article called The Hybrid OriginShow MoreRelatedLake Victoria Of The East African Rift Valley1524 Words   |  7 Pages Lake Victoria in the East African Rift Valley is young compared to the surrounding lakes in the region. Despite this, the haplochromine cichlid fish that inhabit this lake have shown rapid evolution. The lake was formed by a combination of tectonic movement and river water reversal of an â€Å"ancient drainage system† in the Pleistocene. The lake is also shallow compared to others in the area (a maximum depth of 69 meters), so it is unlikely that the resident cichlids could have survived in poolsRead MoreEssay Biology, 7e (Campbell) Chapter 24: the Origin of Species5830 Words   |  24 Pages24: The Origin of Species Chapter Questions 1) Which of the following applies to both anagenesis and cladogenesis? A) branching B) increased diversity C) speciation D) more species E) adaptive radiation Answer: C Topic: Concept 24.1 Skill: Comprehension 2) Which of the following statements about species, as defined by the biological species concept, is (are) correct? I. Biological species are defined by reproductive isolation. II. Biological species are the model usedRead MoreDiversity Within The Taxonomic Group Of Lagormorpha1863 Words   |  8 PagesDiversity within and between species depends on evolution and evolutionary processes. This essay seeks to analyze the origins and significance of diversity within the taxonomic group of Lagormorpha, both within species and between species. Origin of diversity within species Inbreeding depression occurs when species inbreed to a point where the overall fitness of the species decreases significantly. Slate and Pemberton studied how reduced heterozygosity affected the sperm and gonads of wild rabbitsRead MoreArtificial Selection And Its Effects On Our Health3011 Words   |  13 Pages Artificial selection is the process in which humans breed organisms based on physical traits they want to further enhanced or eliminate, in a way artificial selection relies heavy on the phenotype of the organism. Which is the physical trait expressed by genes. An example would be the domestication of the dog. Around 15,000 to 16,000 years ago, we began to breed wolves and actively select for tameness. Li et al. (2013), found â€Å"this rapid evolution was probably driven by artificial selection duringRead More50 Harmful Effects of Genetically Modified (Gm) Foods14312 Words   |  58 Pagesbeen filed with the US Patent Office alone, and many more abroad. Furthermore an economic war broke out to own equity in firms that legally claimed such patent rights or the means to control not only genetically modified organisms but vast reaches of human food supplies. This has been the behind-the-scenes and key factor for some of the largest and rapid agri-chemical firm mergers in history. Th e merger of Pioneer Hi-Bed and Dupont (1997), Novartis AG and AstraZeneca PLC (2000), plus Dow s merger withRead MoreLas 432 Research Paper: Gmos20901 Words   |  84 Pagesorganisms that live within it. The thesis of this report is that Genetically Modified Organisms have distinct benefits with the potential to help starving nations, combat disease and create economic growth; however the research and true benefits to humans in general is underdeveloped and under-regulated. This uncertainty leads to controversy, possible environmental impacts and health concerns. An idea good in concept, Genetically Modified Organisms creates a topic of discussion and the necessity