자유게시판

• 목록
• 게시판 리스트 옵션
  • 수정
  • 삭제

What is Free Evolution?

Free evolution is the idea that natural processes can cause organisms to develop over time. This includes the appearance and 에볼루션 게이밍 development of new species.

Numerous examples have been offered of this, including various kinds of stickleback fish that can be found in salt or fresh water, as well as walking stick insect varieties that favor particular host plants. These mostly reversible trait permutations, however, cannot be the reason for fundamental changes in body plans.

Evolution through Natural Selection

The evolution of the myriad living creatures on Earth is an enigma that has intrigued scientists for decades. The most well-known explanation is Darwin's natural selection process, an evolutionary process that occurs when individuals that are better adapted survive and reproduce more effectively than those less well-adapted. Over time, 에볼루션 무료체험 the population of well-adapted individuals becomes larger and eventually forms a new species.

Natural selection is a process that is cyclical and involves the interaction of three factors including reproduction, variation and inheritance. Variation is caused by mutations and sexual reproduction both of which enhance the genetic diversity of an animal species. Inheritance is the transfer of a person's genetic traits to their offspring that includes recessive and dominant alleles. Reproduction is the generation of fertile, viable offspring, which includes both asexual and sexual methods.

All of these variables have to be in equilibrium for natural selection to occur. For instance when an allele that is dominant at one gene can cause an organism to live and reproduce more often than the recessive allele the dominant allele will be more prevalent in the population. If the allele confers a negative advantage to survival or 에볼루션 블랙잭 decreases the fertility of the population, it will be eliminated. The process is self-reinforced, meaning that a species with a beneficial characteristic will survive and reproduce more than one with an inadaptive characteristic. The greater an organism's fitness which is measured by its ability to reproduce and endure, is the higher number of offspring it produces. Individuals with favorable characteristics, such as a long neck in giraffes, or bright white patterns on male peacocks are more likely to others to reproduce and survive, which will eventually lead to them becoming the majority.

Natural selection is only an element in the population and not on individuals. This is a significant distinction from the Lamarckian evolution theory that states that animals acquire traits due to use or lack of use. If a giraffe extends its neck in order to catch prey and its neck gets longer, then the offspring will inherit this trait. The difference in neck size between generations will continue to grow until the giraffe is unable to breed with other giraffes.

Evolution by Genetic Drift

Genetic drift occurs when alleles from the same gene are randomly distributed in a population. Eventually, only one will be fixed (become widespread enough to not longer be eliminated by natural selection) and the other alleles decrease in frequency. In the extreme this, it leads to a single allele dominance. The other alleles have been basically eliminated and heterozygosity has diminished to zero. In a small number of people it could result in the complete elimination of the recessive gene. Such a scenario would be called a bottleneck effect, and it is typical of evolutionary process that takes place when a large amount of individuals move to form a new population.

A phenotypic 'bottleneck' can also occur when the survivors of a catastrophe like an outbreak or mass hunt incident are concentrated in the same area. The survivors will carry a dominant allele and thus will share the same phenotype. This could be the result of a conflict, earthquake or even a cholera outbreak. The genetically distinct population, if left susceptible to genetic drift.

Walsh Lewens and 에볼루션 게이밍 Ariew utilize Lewens, Walsh and Ariew employ a "purely outcome-oriented" definition of drift as any departure from the expected values for different fitness levels. They cite a famous instance of twins who are genetically identical and 에볼루션 코리아 have the exact same phenotype and 에볼루션 무료체험 yet one is struck by lightning and dies, whereas the other lives and reproduces.

This kind of drift can play a significant part in the evolution of an organism. However, it is not the only way to evolve. Natural selection is the primary alternative, in which mutations and migration maintain the phenotypic diversity of the population.

Stephens asserts that there is a significant difference between treating the phenomenon of drift as a force or cause, and treating other causes such as selection mutation and migration as forces and causes. He claims that a causal process account of drift permits us to differentiate it from these other forces, and this distinction is vital. He also argues that drift has an orientation, i.e., 에볼루션 무료체험 it tends to reduce heterozygosity. It also has a size which is determined by population size.

Evolution by Lamarckism

When high school students take biology classes, they are frequently introduced to the work of Jean-Baptiste Lamarck (1744 - 1829). His theory of evolution is generally called "Lamarckism" and it asserts that simple organisms evolve into more complex organisms via the inheritance of traits that are a result of an organism's natural activities use and misuse. Lamarckism is typically illustrated with a picture of a giraffe stretching its neck longer to reach higher up in the trees. This would cause giraffes' longer necks to be passed onto their offspring who would grow taller.

Lamarck Lamarck, a French Zoologist, introduced an idea that was revolutionary in his 17 May 1802 opening lecture at the Museum of Natural History of Paris. He challenged the conventional wisdom on organic transformation. In his view living things evolved from inanimate matter through the gradual progression of events. Lamarck was not the first to suggest that this could be the case but his reputation is widely regarded as being the one who gave the subject his first comprehensive and thorough treatment.

The predominant story is that Charles Darwin's theory of evolution by natural selection and Lamarckism were rivals in the 19th Century. Darwinism ultimately won which led to what biologists call the Modern Synthesis. This theory denies acquired characteristics can be passed down through generations and instead, it claims that organisms evolve through the selective influence of environmental factors, including Natural Selection.

Lamarck and his contemporaries believed in the idea that acquired characters could be passed down to future generations. However, this concept was never a major part of any of their theories about evolution. This is largely due to the fact that it was never tested scientifically.

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 also known as "neo Lamarckism", or more often epigenetic inheritance. This is a version that is just as valid as the popular Neodarwinian model.

Evolution by Adaptation

One of the most common misconceptions about evolution is that it is being driven by a struggle for survival. This view misrepresents natural selection and ignores 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.

To understand how evolution operates it is beneficial to consider what adaptation is. Adaptation is any feature that allows living organisms to survive in its environment and reproduce. It could be a physical structure like feathers or fur. It could also be a behavior trait, like moving to the shade during hot weather or escaping the cold at night.

The survival of an organism depends on its ability to extract energy from the environment and to interact with other organisms and their physical environments. The organism must possess the right genes to create offspring, and 에볼루션 슬롯 it should be able to locate sufficient food and other resources. Furthermore, the organism needs to be capable of reproducing at a high rate within its environment.

These factors, in conjunction with gene flow and mutations can cause changes in the proportion of different alleles within the gene pool of a population. This change in allele frequency can lead to the emergence of new traits and eventually, new species over time.

A lot of the traits we appreciate in animals and plants are adaptations. For example, lungs or gills that draw oxygen from air feathers and fur for insulation long legs to run away from predators and camouflage to conceal. To understand adaptation it is essential to differentiate between physiological and behavioral characteristics.

Physical traits such as large gills and thick fur are physical characteristics. Behavioral adaptations are not, such as the tendency of animals to seek companionship or retreat into shade during hot temperatures. In addition it is important to note that a lack of thought does not make something an adaptation. In fact, a failure to consider the consequences of a choice can render it unadaptable despite the fact that it might appear sensible or even necessary.