Evolutionary Theory & Views of Evolution According to Experts
Evolutionary Theory & Views of Evolution According to Experts – Before thoroughly discussing the material about Evolution, we must first know and understand the basic concept of Evolution. The definition of Evolution is process of gradual change over a long period of time.
Evolutionary Theory & Views of Evolution According to Experts
Evolution, if it results in a new species that can survive in the next period of life is called progressive evolution. Meanwhile, if it produces species that cannot last long it is called regressive evolution.
Views of Evolution According to Experts
Some figures who provide views on the theory of evolution include:
J.B. Lamarck
evolution because of the process of adaptation and the results of this process will be inherited. For example, the reduced cactus leaves like thorns are a form of adaptation to the environment in desert areas.
Darwin
Evolution occurs as a result of natural selection events. Living things that can adapt to the environment will survive —> struggle for life.
Weisman
Changes in somatic cells due to environmental influences will not be inherited (evolution is a process of natural selection of genetic factors).
Some clues that can be used to determine the existence of an evolutionary process include: variations, fossils, homologies and analogies, embryology, physiology and comparative anatomy, remains, and biochemical clues.
The mechanism of the evolutionary process is inseparable from the existence of genetic variation and natural selection. These variations arise due to mutations and recombination of genes within one lineage. The gene frequency in the population will remain the same if there is no mutation and vice versa.
If a mutation occurs, the gene frequency will change and will cause a change in allele frequency. Mutations naturally will be less likely because the body seeks to repair DNA. According to the law Hardy Weinberg if there is no mutation, the gene frequency remains stable or more or less the same.
Here is a brief discussion about Evolutionary Theory & Views of Evolution According to Experts, hopefully can add knowledge and be useful. Thank You.
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