What is Free Evolution?

Free evolution is the concept that natural processes can cause organisms to evolve over time. This includes the appearance and development of new species.

Many examples have been given of this, including different varieties of stickleback fish that can be found in salt or fresh water, as well as walking stick insect varieties that are attracted to specific host plants. These mostly reversible trait permutations, however, cannot be the reason for fundamental changes in body plans.

Evolution through Natural Selection

Scientists have been fascinated by the development of all living organisms that inhabit our planet for centuries. Charles Darwin's natural selection is the best-established explanation. This happens when people who are more well-adapted are able to reproduce faster and longer than those who are less well-adapted. Over time, the population of well-adapted individuals grows and eventually creates a new species.

Natural selection is a cyclical process that is characterized by the interaction of three elements: variation, inheritance and reproduction. Mutation and sexual reproduction increase genetic diversity in the species. Inheritance is the term used to describe the transmission of a person’s genetic traits, which include recessive and dominant genes, to their offspring. Reproduction is the generation of fertile, viable offspring, which includes both asexual and sexual methods.

Natural selection only occurs when all the factors are in equilibrium. For instance when an allele that is dominant at one gene causes an organism to survive and reproduce more often than the recessive one, the dominant allele will be more prominent within the population. If the allele confers a negative advantage to survival or reduces the fertility of the population, it will be eliminated. This process is self-reinforcing which means that an organism that has an adaptive characteristic will live and reproduce much more than those with a maladaptive trait. The more fit an organism is, measured by its ability reproduce and endure, is the higher number of offspring it will produce. Individuals with favorable traits, like a longer neck in giraffes or bright white color patterns in male peacocks are more likely survive and produce offspring, so they will become the majority of the population over time.

Natural selection is only a force for populations, not on individual organisms. This is a significant distinction from the Lamarckian theory of evolution which states that animals acquire characteristics through use or disuse. If a giraffe expands its neck to reach prey and the neck grows longer, then the offspring will inherit this characteristic. The length difference between generations will continue until the giraffe's neck becomes too long that it can no longer breed with other giraffes.

Evolution by Genetic Drift

In genetic drift, the alleles within a gene can be at different frequencies in a group by chance events. Eventually, only one will be fixed (become common enough that it can no longer be eliminated by natural selection) and 에볼루션 무료 바카라 the other alleles will diminish in frequency. This can lead to terozygosity. It also has a size, which is determined by the size of population.

Evolution through Lamarckism

When students in high school study biology they are often introduced to the work of Jean-Baptiste Lamarck (1744 - 1829). His theory of evolution, often referred to as "Lamarckism" which means that simple organisms transform into more complex organisms through taking on traits that are a product of the organism's use and misuse. Lamarckism is illustrated through a giraffe extending its neck to reach higher branches in the trees. This would cause giraffes to pass on their longer necks to their offspring, who then get taller.

Lamarck was a French Zoologist. In his lecture to begin his course on invertebrate zoology held at the Museum of Natural History in Paris on the 17th May 1802, he introduced a groundbreaking concept that radically challenged the conventional wisdom about organic transformation. In his view living things evolved from inanimate matter via an escalating series of steps. Lamarck was not the first to suggest that this might be the case but his reputation is widely regarded as having given the subject its first broad and comprehensive treatment.

The dominant story is that Charles Darwin's theory of evolution by natural selection and Lamarckism were competing in the 19th century. Darwinism eventually prevailed, leading to what biologists refer to as the Modern Synthesis. The theory argues that acquired characteristics can be inherited, and 에볼루션 무료 바카라 instead argues that organisms evolve by the symbiosis of environmental factors, including natural selection.

Lamarck and his contemporaries supported the idea that acquired characters could be passed down to future generations. However, this idea was never a major part of any of their theories on evolution. This is partly because it was never scientifically tested.

However, it has been more than 200 years since Lamarck was born and in the age of genomics there is a huge amount of evidence that supports the possibility of inheritance of acquired traits. This is often referred to as "neo-Lamarckism" or more frequently, epigenetic inheritance. It is a variant of evolution that is as valid as the more well-known Neo-Darwinian theory.

Evolution by the process of adaptation

One of the most common misconceptions about evolution is that it is driven by a sort of struggle for survival. In fact, this view is a misrepresentation of natural selection and ignores the other forces that determine the rate of evolution. The fight for survival can be more accurately described as a struggle to survive within a particular environment, 에볼루션 블랙잭 which could include not just other organisms but also the physical environment.

Understanding how adaptation works is essential to comprehend evolution. Adaptation refers to any particular feature that allows an organism to survive and reproduce in its environment. It can be a physiological structure such as fur or feathers, or a behavioral trait, such as moving into the shade in hot weather or coming out at night to avoid cold.

The survival of an organism is dependent on its ability to draw 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 에볼루션코리아 be able find sufficient food and resources. Moreover, the organism must be able to reproduce itself in a way that is optimally within its environment.

These factors, along with mutation and gene flow, lead to changes in the ratio of alleles (different varieties of a particular gene) in a population's gene pool. The change in frequency of alleles could lead to the development of new traits and eventually, new species as time passes.

A lot of the traits we admire about animals and plants are adaptations, like the lungs or gills that extract oxygen from the air, feathers or fur to protect themselves and long legs for running away from predators, and camouflage for hiding. However, a complete understanding of adaptation requires a keen eye to the distinction between the physiological and behavioral characteristics.

Physical characteristics like the thick fur and gills are physical traits. Behavioral adaptations are not like the tendency of animals to seek out companionship or to retreat into the shade during hot weather. It is also important to note that insufficient planning does not make an adaptation. Inability to think about the effects of a behavior, even if it appears to be rational, may make it unadaptive.