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What is Free Evolution?<br><br>Free evolution is the idea that the natural processes of organisms can cause them to develop over time. This includes the creation of new species and transformation of the appearance of existing species.<br><br>This has been demonstrated by many examples such as the stickleback fish species that can live in saltwater or fresh water and walking stick insect types that have a preference for particular host plants. These reversible traits, however, cannot be the reason for fundamental changes in body plans.<br><br>Evolution through Natural Selection<br><br>Scientists have been fascinated by the development of all living creatures that live on our planet for centuries. The most widely accepted explanation is Darwin's natural selection process, a process that occurs when individuals that are better adapted survive and reproduce more effectively than those less well adapted. As time passes, the number of individuals who are well-adapted grows and eventually creates an entirely new species.<br><br>Natural selection is an ongoing process and involves the interaction of 3 factors that are: reproduction, variation and inheritance. Mutation and sexual reproduction increase genetic diversity in the species. Inheritance refers the transmission of genetic characteristics, which includes both dominant and recessive genes to their offspring. Reproduction is the production of fertile, viable offspring, which includes both asexual and sexual methods.<br><br>All of these elements must be in harmony for natural selection to occur. If, for instance an allele of a dominant gene makes an organism reproduce and survive more than the recessive gene allele then the dominant allele is more prevalent in a group. But if the allele confers an unfavorable survival advantage or decreases fertility, it will be eliminated from the population. This process is self-reinforcing which means that an organism with a beneficial trait will survive and reproduce more than one with an inadaptive trait. The more offspring an organism produces, the greater its fitness that is determined by its capacity to reproduce and survive. Individuals with favorable characteristics, such as a long neck in Giraffes, or the bright white patterns on male peacocks are more likely to others to survive and reproduce and eventually lead to them becoming the majority.<br><br>Natural selection is only an element in the population and not on individuals. This is a significant distinction from the Lamarckian theory of evolution which holds that animals acquire traits through use or lack of use. For example, if a animal's neck is lengthened by reaching out to catch prey and its offspring will inherit a larger neck. The difference in neck size between generations will increase until the giraffe is no longer able to breed with other giraffes.<br><br>Evolution by Genetic Drift<br><br>In genetic drift, the alleles of a gene could be at different frequencies in a population through random events. At some point, only one of them will be fixed (become widespread enough to not more be eliminated through natural selection) and the other alleles will decrease in frequency. This can lead to dominance in the extreme. The other alleles have been basically eliminated and heterozygosity has diminished to a minimum. In a small population this could lead to the complete elimination of the recessive gene. This scenario is called a bottleneck effect, and it is typical of the kind of evolutionary process that occurs when a lot of individuals migrate to form a new group.<br><br>A phenotypic  bottleneck can also occur when survivors of a disaster such as an outbreak or mass hunting event are concentrated in a small area. The surviving individuals are likely to be homozygous for the dominant allele, which means they will all share the same phenotype and will thus have the same fitness characteristics. This situation might be caused by a conflict, 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 and Ariew define drift as a deviation from the expected value due to differences in fitness. They cite a famous instance of twins who are genetically identical, have identical phenotypes, and yet one is struck by lightning and dies, whereas the other lives and reproduces.<br><br>This kind of drift can play a very important role in the evolution of an organism. This isn't the only method of evolution. Natural selection is the primary alternative, in which mutations and migration maintain the phenotypic diversity in a population.<br><br>Stephens argues that there is a significant difference between treating the phenomenon of drift as a force or an underlying cause, and considering other causes of evolution such as selection, mutation and migration as causes or causes. Stephens claims that a causal process explanation of drift lets us separate it from other forces and this differentiation is crucial. He further argues that drift is both a direction, i.e., it tends to reduce heterozygosity. It also has a size which is determined by the size of the population.<br><br>Evolution through Lamarckism<br><br>When high school students study biology, they are often introduced to the work of Jean-Baptiste Lamarck (1744 - 1829). His theory of evolution is generally known as "Lamarckism" and it states that simple organisms develop into more complex organisms by the inheritance of characteristics which result from the natural activities of an organism usage, use and disuse. Lamarckism is typically illustrated with an image of a giraffe that extends its neck to reach leaves higher up in the trees. This could cause giraffes' longer necks to be passed on to their offspring who would grow taller.<br><br>Lamarck Lamarck, a French Zoologist from France,  [http://italianculture.net/redir.php?url=https://meier-field-2.thoughtlanes.net/7-practical-tips-for-making-the-most-of-your-evolution-casino 에볼루션 바카라 무료체험] presented a revolutionary concept in his opening lecture at the Museum of Natural History of Paris. He challenged the traditional thinking about organic transformation. In his opinion living things evolved from inanimate matter through the gradual progression of events. Lamarck was not the only one to suggest that this could be the case but the general consensus is that he was the one having given the subject his first comprehensive and comprehensive treatment.<br><br>The prevailing story is that Lamarckism was an opponent to Charles Darwin's theory of evolutionary natural selection and that the two theories battled it out in the 19th century. Darwinism eventually won and led to the creation of what biologists now refer to as the Modern Synthesis. The theory argues that acquired traits can be passed down and instead argues that organisms evolve through the selective influence of environmental factors, such as Natural Selection.<br><br>While Lamarck endorsed the idea of inheritance through acquired characters and his contemporaries also paid lip-service to this notion however, it was not a major feature in any of their evolutionary theories. This is largely due to the fact that it was never validated scientifically.<br><br>However, it has been more than 200 years since Lamarck was born and in the age genomics there is a huge amount of evidence that supports the heritability of acquired characteristics. This is sometimes referred to as "neo-Lamarckism" or, more frequently epigenetic inheritance. It is a form of evolution that is just as relevant as the more popular Neo-Darwinian model.<br><br>Evolution by Adaptation<br><br>One of the most commonly-held misconceptions about evolution is its being driven by a fight for  [https://pattern-wiki.win/wiki/Evolution_Baccarat_Site_The_Good_The_Bad_And_The_Ugly 무료 에볼루션] 슬롯; [https://fakenews.win/wiki/Are_Evolution_Baccarat_Site_The_Best_Thing_There_Ever_Was Fakenews.win explained in a blog post], survival. This view is inaccurate and ignores other forces driving evolution. The struggle for existence is better described as a fight to survive in a specific environment. This may be a challenge for not just other living things, but also the physical environment itself.<br><br>To understand how evolution operates, it is helpful to understand what is adaptation. Adaptation is any feature that allows a living organism to survive in its environment and reproduce. It could be a physical structure like feathers or fur. Or it can be a trait of behavior such as moving towards shade during hot weather, or moving out to avoid the cold at night.<br><br>The survival of an organism is dependent on its ability to extract energy from the environment and to interact with other organisms and  [https://mozillabd.science/wiki/7_Useful_Tips_For_Making_The_The_Most_Of_Your_Evolution_Slot 에볼루션 카지노 사이트] their physical environments. The organism must have the right genes to produce offspring, and be able to find enough food and resources. Furthermore, the organism needs to be capable of reproducing itself in a way that is optimally within its environmental niche.<br><br>These elements, in conjunction with gene flow and mutation can result in a change in the proportion of alleles (different types of a gene) in the gene pool of a population. As time passes, this shift in allele frequencies can lead to the emergence of new traits and eventually new species.<br><br>Many of the features that we admire in animals and plants are adaptations, such as lung or gills for removing oxygen from the air, feathers or fur to provide insulation and long legs for running away from predators, and camouflage to hide. However, a thorough understanding of adaptation requires paying attention to the distinction between physiological and behavioral characteristics.<br><br>Physiological adaptations like thick fur or gills are physical traits, while behavioral adaptations, like the tendency to seek out companions or to retreat to the shade during hot weather, are not. In addition, it is important to note that a lack of thought is not a reason to make something an adaptation. In fact, failure to think about the consequences of a behavior can make it unadaptable, despite the fact that it might appear sensible or even necessary.