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What is Free Evolution?<br><br>Free evolution is the notion that the natural processes of living organisms can lead to their development over time. This includes the evolution of new species and change in appearance of existing species.<br><br>This is evident in numerous examples,  [https://fsquan8.cn/home.php?mod=space&uid=3316233 에볼루션 슬롯] including stickleback fish varieties that can live in fresh or saltwater and walking stick insect types that have a preference for particular host plants. These reversible traits can't, however, explain fundamental changes in body plans.<br><br>Evolution through Natural Selection<br><br>The development of the myriad living creatures on Earth is a mystery that has fascinated scientists for decades. Charles Darwin's natural selection is the best-established explanation. This happens when those who are better adapted have more success in reproduction and survival than those who are less well-adapted. As time passes, the number of individuals who are well-adapted grows and eventually forms a new species.<br><br>Natural selection is a cyclical process that involves the interaction of three elements: variation, inheritance and reproduction. Variation is caused by mutation and sexual reproduction both of which increase the genetic diversity within the species. Inheritance refers to the transmission of genetic traits, which include recessive and dominant genes, to their offspring. Reproduction is the process of creating viable, fertile offspring. This can be done via sexual or  [http://wzgroupup.hkhz76.badudns.cc/home.php?mod=space&uid=2330303 에볼루션카지노사이트] asexual methods.<br><br>All of these factors have to be in equilibrium for natural selection to occur. For instance, if a dominant allele at a gene causes an organism to survive and reproduce more often than the recessive one, the dominant allele will become more prominent within the population. If the allele confers a negative advantage to survival or lowers the fertility of the population, it will go away. The process is self-reinforcing, meaning that a species that has a beneficial trait will survive and reproduce more than one with an unadaptive trait. The more offspring an organism produces, the greater its fitness which is measured by its capacity to reproduce and survive. Individuals with favorable characteristics, such as the long neck of the giraffe,  [http://douerdun.com/home.php?mod=space&uid=1783051 에볼루션 카지노 사이트] or  [https://wiki.vst.hs-furtwangen.de/wiki/User:LeannaWetherspoo 에볼루션 카지노] bright white patterns on male peacocks are more likely than others to live and reproduce and eventually lead to them becoming the majority.<br><br>Natural selection is only an aspect of populations and not on individuals. This is a major distinction from the Lamarckian theory of evolution which argues that animals acquire characteristics through use or neglect. If a giraffe stretches its neck to catch prey, and the neck becomes longer, then the offspring will inherit this characteristic. The difference in neck size between generations will continue to increase until the giraffe becomes unable to breed with other giraffes.<br><br>Evolution through Genetic Drift<br><br>Genetic drift occurs when alleles of one gene are distributed randomly in a population. Eventually, only one will be fixed (become widespread enough to not more be eliminated through natural selection) and the other alleles diminish in frequency. This could lead to a dominant allele at the extreme. The other alleles are eliminated, and heterozygosity falls to zero. In a small population this could lead to the complete elimination of the recessive gene. This scenario is called the bottleneck effect and is typical of the evolutionary process that occurs whenever a large number individuals migrate to form a population.<br><br>A phenotypic  bottleneck may also occur when the survivors of a catastrophe like an outbreak or mass hunt event are concentrated in an area of a limited size. The surviving individuals are likely to be homozygous for the dominant allele which means that they will all have the same phenotype and therefore have the same fitness traits. This may be the result of a war, an earthquake or even a disease. Regardless of the cause the genetically distinct population that remains could be prone to genetic drift.<br><br>Walsh Lewens, Lewens, and Ariew utilize Lewens, Walsh, and Ariew use a "purely outcome-oriented" definition of drift as any departure from the expected values for variations in fitness. They give the famous example of twins who are both genetically identical and have exactly the same phenotype. However, one is struck by lightning and dies, while the other lives to reproduce.<br><br>This kind of drift could play a crucial role in the evolution of an organism. However, it is not the only method to evolve. The main alternative is to use a process known as natural selection,  [https://click4r.com/posts/g/18861431/10-quick-tips-about-evolution-korea 에볼루션 사이트] 카지노 ([https://valetinowiki.racing/wiki/3_Reasons_Commonly_Cited_For_Why_Your_Evolution_Casino_Isnt_Performing_And_How_To_Fix_It see more]) where the phenotypic variation of a population is maintained by mutation and migration.<br><br>Stephens claims that there is a huge difference between treating drift like a force or cause, and treating other causes like selection mutation and migration as causes and forces. He argues that a causal-process account of drift allows us separate it from other forces and this distinction is crucial. He argues further that drift has both a direction, i.e., it tends towards eliminating heterozygosity. It also has a size which is determined based on the size of the population.<br><br>Evolution by Lamarckism<br><br>Students of biology in high school are frequently introduced to Jean-Baptiste Lemarck's (1744-1829) work. His theory of evolution, often called "Lamarckism, states that simple organisms develop into more complex organisms by taking on traits that result from an organism's use and disuse. Lamarckism is typically illustrated with an image of a giraffe that extends its neck longer to reach the higher branches in the trees. This could cause the necks of giraffes that are longer to be passed to their offspring, who would grow taller.<br><br>Lamarck was a French zoologist and, in his inaugural lecture for his course on invertebrate Zoology at the Museum of Natural History in Paris on the 17th of May in 1802, he introduced an innovative concept that completely challenged previous thinking about organic transformation. In his view living things had evolved from inanimate matter through the gradual progression of events. Lamarck wasn't the only one to suggest this but he was considered to be the first to provide the subject a thorough and general overview.<br><br>The most popular story is that Lamarckism grew into an opponent to Charles Darwin's theory of evolutionary natural selection, and that the two theories fought out in the 19th century. Darwinism eventually prevailed, leading to what biologists call the Modern Synthesis. The theory denies that acquired characteristics can be passed down and instead, it claims that organisms evolve through the selective influence of environmental elements, like Natural Selection.<br><br>Although Lamarck supported the notion of inheritance by acquired characters and his contemporaries paid lip-service to this notion, it was never an integral part of any of their evolutionary theories. This is due to the fact that it was never tested scientifically.<br><br>It's been more than 200 years since Lamarck was born and in the age genomics, there is a large amount of evidence that supports the possibility of inheritance of acquired traits. It is sometimes called "neo-Lamarckism" or, more frequently, epigenetic inheritance. It is a version of evolution that is just as relevant as the more popular Neo-Darwinian model.<br><br>Evolution by the process of adaptation<br><br>One of the most popular misconceptions about evolution is that it is driven by a sort of struggle to survive. This view is inaccurate and overlooks the other forces that determine the rate of evolution. The struggle for survival is more accurately described as a struggle to survive within a particular environment, which may involve not only other organisms, but also the physical environment.<br><br>Understanding the concept of adaptation is crucial to understand evolution. It refers to a specific feature that allows an organism to survive and reproduce within its environment. It can be a physical structure like feathers or fur. Or it can be a behavior trait such as moving into the shade during hot weather or moving out to avoid the cold at night.<br><br>The ability of an organism to extract energy from its surroundings and interact with other organisms as well as their physical environments is essential to its survival. The organism must have the right genes to generate offspring, and must be able to locate enough food and other resources. In addition, the organism should be capable of reproducing at a high rate within its environment.<br><br>These factors, in conjunction with gene flow and mutations, can lead to a shift in the proportion of different alleles within the gene pool of a population. As time passes, this shift in allele frequencies can result in the development of new traits and eventually new species.<br><br>Many of the features that we admire in animals and plants are adaptations, like lungs or gills to extract oxygen from the air, feathers or fur to provide insulation long legs to run away from predators and camouflage to hide. However, a proper understanding of adaptation requires paying attention to the distinction between physiological and behavioral traits.<br><br>Physiological adaptations, such as thick fur or gills, are physical traits, while behavioral adaptations, like the desire to find friends or to move into the shade in hot weather, are not. Furthermore, it is important to remember that a lack of forethought is not a reason to make something an adaptation. In fact, failing to think about the implications of a choice can render it unadaptable even though it appears to be reasonable or even essential.