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What is Free Evolution?<br><br>Free evolution is the idea that the natural processes of living organisms can lead to their development over time. This includes the appearance and development of new species.<br><br>This has been demonstrated by numerous examples such as the stickleback fish species that can live in saltwater or fresh water and walking stick insect varieties that prefer particular host plants. These reversible traits are not able to explain fundamental changes to the basic body plan.<br><br>Evolution through Natural Selection<br><br>Scientists have been fascinated by the evolution of all living creatures that inhabit our planet for centuries. The most widely accepted explanation is Charles Darwin's natural selection process, a process that occurs when better-adapted individuals survive and reproduce more successfully than those that are less well-adapted. Over time, the population of well-adapted individuals becomes larger and eventually develops into a new species.<br><br>Natural selection is a cyclical process that involves the interaction of three factors: variation, inheritance and reproduction. Mutation and sexual reproduction increase the genetic diversity of the species. Inheritance refers to the transmission of a person’s genetic traits, including both dominant and  [https://git.vanei.me/evolution2861 에볼루션카지노사이트] recessive genes and their offspring. Reproduction is the process of generating fertile, viable offspring. This can be done via sexual or asexual methods.<br><br>All of these factors must be in balance to allow natural selection to take place. If, for example the dominant gene allele allows an organism to reproduce and last longer than the recessive allele, then the dominant allele is more prevalent in a group. However,  [https://021lyrics.com/index.php?title=User:KatePye93897552 에볼루션 카지노] if the allele confers a disadvantage in survival or decreases fertility, it will disappear from the population. The process is self-reinforcing, which means that an organism with a beneficial characteristic is more likely to survive and reproduce than one with an inadaptive characteristic. The more fit an organism is, measured by its ability reproduce and endure,  [https://thebitcoinproject.club/wiki/index.php/User:Evolution7512 에볼루션 블랙잭] 룰렛 [[https://andonovproltd.com/employer/evolution-korea/ Andonovproltd.Com]] is the higher number of offspring it will produce. Individuals with favorable traits,  [http://git.p-team.ru/evolution8197 에볼루션 코리아] 카지노 ([https://gitea.timurcelik.de/evolutionkr5767 description here]) such as longer necks in giraffes or  [http://202.87.221.241:10880/evolution6053 무료에볼루션] bright white colors in male peacocks are more likely survive and have offspring, which means they will make up the majority of the population over time.<br><br>Natural selection is a factor in populations and not on individuals. This is a major distinction from the Lamarckian theory of evolution that states that animals acquire traits either through use or lack of use. For instance, if the giraffe's neck gets longer through reaching out to catch prey its offspring will inherit a more long neck. The differences in neck size between generations will continue to increase until the giraffe is no longer able to reproduce with other giraffes.<br><br>Evolution by Genetic Drift<br><br>In genetic drift, alleles of a gene could reach different frequencies in a population by chance events. Eventually, one of them will reach fixation (become so widespread that it is unable to be eliminated through natural selection) and other alleles fall to lower frequency. This could lead to dominance in extreme. The other alleles are essentially eliminated, and heterozygosity falls to zero. In a small group it could lead to the total elimination of recessive allele. This scenario is called the bottleneck effect and is typical of the evolution process that occurs when a large number individuals migrate to form a group.<br><br>A phenotypic 'bottleneck' can also occur when the survivors of a catastrophe such as an outbreak or mass hunt event are confined to the same area. The remaining individuals are likely to be homozygous for the dominant allele, which means that they will all share the same phenotype and will consequently have the same fitness traits. This could be the result of a war, an earthquake or even a disease. Regardless of the cause, the genetically distinct population that is left might be susceptible to genetic drift.<br><br>Walsh, Lewens, and Ariew utilize a "purely outcome-oriented" definition of drift as any departure from expected values for variations in fitness. They provide a well-known example of twins that are genetically identical, share identical phenotypes and yet one is struck by lightning and dies, while the other lives and reproduces.<br><br>This type of drift is vital to the evolution of a species. This isn't the only method of evolution. Natural selection is the primary alternative, in which mutations and migration keep the phenotypic diversity in the population.<br><br>Stephens claims that there is a vast difference between treating drift like a force or cause, and treating other causes like migration and selection as forces and causes. He argues that a causal mechanism account of drift permits us to differentiate it from the other forces, and this distinction is vital. He also argues that drift has both direction, i.e., it tends to eliminate heterozygosity. It also has a size, which is determined based on population size.<br><br>Evolution through Lamarckism<br><br>Biology students in high school are often exposed to Jean-Baptiste lamarck's (1744-1829) work. His theory of evolution, often referred to as "Lamarckism which means that simple organisms evolve into more complex organisms through inheriting characteristics that are a product of the organism's use and misuse. Lamarckism can be illustrated by a giraffe extending its neck to reach higher leaves in the trees. This could result in giraffes passing on their longer necks to offspring, who then get taller.<br><br>Lamarck Lamarck, a French Zoologist from France, presented an idea that was revolutionary in his 17 May 1802 opening lecture at the Museum of Natural History of Paris. He challenged the previous thinking on organic transformation. According to him living things evolved from inanimate matter through a series of gradual steps. Lamarck wasn't the first to propose this, but he was widely regarded as the first to give the subject a thorough and general treatment.<br><br>The prevailing story is that Lamarckism was a rival to Charles Darwin's theory of evolution through natural selection and that the two theories fought it out in the 19th century. Darwinism eventually triumphed, leading to the development of what biologists today call the Modern Synthesis. The theory argues that acquired characteristics can be inherited, and instead, it argues that organisms develop by the symbiosis of environmental factors, including natural selection.<br><br>While Lamarck supported the notion of inheritance through acquired characters and his contemporaries also spoke of this idea, it was never a central element in any of their evolutionary theorizing. This is due in part 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 of genomics there is a vast amount of evidence that supports the heritability of acquired traits. This is also known as "neo Lamarckism", or more commonly epigenetic inheritance. This is a model that is as valid as the popular Neodarwinian model.<br><br>Evolution through the process of adaptation<br><br>One of the most common misconceptions about evolution is that it is driven by a type of struggle for survival. In reality, this notion is inaccurate and overlooks the other forces that determine the rate of evolution. The fight for survival can be more precisely described as a fight to survive in a specific environment, which may involve not only other organisms but also the physical environment itself.<br><br>Understanding the concept of adaptation is crucial to comprehend evolution. The term "adaptation" refers to any characteristic that allows a living organism to live in its environment and reproduce. It could be a physical structure like feathers or fur. It could also be a characteristic of behavior, like moving towards shade during hot weather, or moving out to avoid the cold at night.<br><br>The capacity of a living thing to extract energy from its environment and interact with other organisms as well as their physical environments is essential to its survival. The organism must possess the right genes to generate offspring, and it must be able to find sufficient food and other resources. The organism must be able to reproduce at a rate that is optimal for its specific niche.<br><br>These factors, together with gene flow and mutations can result in changes in the proportion of different alleles within the population's gene pool. The change in frequency of alleles could lead to the development of new traits, and eventually new species in the course of time.<br><br>Many of the features we appreciate in animals and plants are adaptations. For example lung or gills that extract oxygen from the air, fur and feathers as insulation and long legs to get away from predators and camouflage for hiding. To understand the concept of adaptation it is essential to discern between physiological and behavioral characteristics.<br><br>Physiological traits like thick fur and gills are physical traits. Behavior adaptations aren't like the tendency of animals to seek companionship or move into the shade during hot temperatures. It is also important to remember that a the absence of planning doesn't cause an adaptation. Inability to think about the effects of a behavior, even if it appears to be rational, may make it unadaptive.