Genetic drift

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    there is an epigenetic drift which is age-related, it could affect how susceptible one is to neurodegenerative diseases. “Many rare genetic disorders are increasingly identified in infancy or early childhood. and there is a general consensus across disorders that the average age is getting younger over time” (Fuso). This is because there is a growing knowledge and increased awareness of many more diseases and their genetic modifications. It is possible that age- related drifts in brain…

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    1. DNA Structure and Function DNA is the type of organic compound that stores the genetic information in a living organism. DNA is made up of two strands of nucleotides, which include a phosphate group, five carbon sugar, and a nitrogenous base. Each individual strand in held together by strong covalent bonds (a bond formed as a result of the distribution of electrons between atoms). The two strands are then joined to each other by hydrogen bonds between complementary bases. There are four…

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    Mutations are changes in the genetic code which is the only way through which new genetic material and variations can be obtained. Mutations further include chromosomal mutations which is necessary for various variations. Genetic Drift can be defined as how the changes that occur randomly in the frequency of alleles which impact populations of many species. These also lead to effects such as bottle neck and founders effect. Natural Selection revolves around the concept of fitness which…

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    Human Epigenetics

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    research is still being conducted as to if the methylation process is a default state, applied to the entire genome, or if it is targeted at specific sequences. As humans age, DNA methyl groups grow more and more unregulated. Known as ‘epigenetic drift’, this process and its influence on the organism at large is still largely unknown, but hypermethylation linked to old age has been theorized to target developmental genes, including those associated with disease risk factors and cancer itself.…

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    Evolution In Schools

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    theories of how humans came to be, although widely accepted evolution is only another theory. Evolution is “where changes occur in the gene pool of a population from generation to generation by such processes as mutation, natural selection, and genetic drift” (dictionary.com, Evolution)). Although evolution has some scientific background, it should only be taught in schools as a theory to allow students exploration of their personal beliefs. Because personal beliefs are well respected in Canada,…

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    One result of random genetic drift and gene substitution is mutant alleles, however the probability that these mutations become fixed in a population is not solely dependent on the advantageous nature of the allele, rather the probability of fixation is determined by the allele frequency, the selective advantage or disadvantage, and the effective population size. The probability of fixation for a particular allele is demonstrated by the equation where probability is equal to 1 minus the…

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    The Homo Floresiensis

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    Speciation is how new species are made which involves a form of isolation (Lewis et al., 2013, p. 103). It also is about the divergence of genetic information between two species that once were the same but they separated and were unable to reproduce with one another and over time as they evolved they become genetically different due to these conditions (Lewis et al., 2013, p. 103). An important…

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    Why Do Blood Types Exist

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    There has been much thought in the scientific community about the polymorphism of human blood types and their genetic factors, and disagreement and uncertainty about details like which evolutionary mechanism blood types have followed over the course of their development and how one’s blood type and environment interact. Investigation and study of blood types has revealed many aspects in which certain blood types provide some advantage to their possessors, providing evidence that they were…

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    Physical Anthropology

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    Biological evolution is expressed as genetic change in a population that is inherited over time. Throughout numerous generations, the changes may be classified as small or large, conspicuous and non-conspicuous, but the changes must occur on the genetic level of one population and be passed on to future generations. Evolution is a scientific theory proposed by Charles Darwin that offers explanations and predictions for naturally occurring phenomena based on observations and experiments that…

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    past, genetic research has advanced a great deal. For many centuries, it was believed that God had created the human species; however, due to the researches and experiments done by scientists like Hippocrates, Aristotle, Charles Darwin, Gregor Mendel… it is now accepted that the true force behind evolution, is the adaptation of the genetic code to the environment. As the research in eugenics advances, researchers discover an array of different possible applications such as: germ-line genetic…

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