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The Berkeley Evolution Site<br><br>The Berkeley site contains resources that can help students and teachers understand and teach evolution. The resources are organized into a variety of learning paths such as "What did T. rex taste like?"<br><br>Charles Darwin's theory of natural selection explains how creatures that are better equipped to adapt to changes in their environment survive over time and those that don't become extinct. This process of evolution is the basis of science.<br><br>What is Evolution?<br><br>The term "evolution" can be used to refer to a variety of nonscientific meanings. For example, it can mean "progress" and "descent with modifications." It is scientifically based and is used to describe the process of change of characteristics in a species or species. This change is based in biological terms on natural drift and selection.<br><br>Evolution is one of the fundamental tenets of modern biology. It is an accepted theory that has stood the test of time and a multitude of scientific experiments. Evolution does not deal with the existence of God or religious beliefs like other theories of science, such as the Copernican or germ theory of disease.<br><br>Early evolutionists, like Jean-Baptiste Lamarck and Erasmus Darwin (Charles's grandfather) believed that certain physical traits were predetermined to change in a step-like way, over time. This was known as the "Ladder of Nature", or scala Naturae. Charles Lyell first used this term in 1833 in his Principles of Geology.<br><br>Darwin revealed his theory of evolution in his book On the Origin of Species which was written in the early 1800s. It claims that different species of organisms share the same ancestry, which can be traced through fossils and  [http://taikwu.com.tw/dsz/home.php?mod=space&uid=1284624 에볼루션 코리아] other lines of evidence. This is the current understanding of evolution that is supported by numerous lines of scientific research which includes molecular genetics.<br><br>Scientists don't know how organisms have evolved, but they are confident that natural selection and genetic drift are the primary reason for the development of life. Individuals with advantageous traits are more likely to survive and reproduce,  [https://wiki.gta-zona.ru/index.php/Blommcmillan3167 에볼루션 무료체험] and these individuals transmit their genes to the next generation. Over time the gene pool gradually changes and develops into new species.<br><br>Some scientists use the term"evolution" to refer to large-scale changes, such the development of one species from an ancestral one. Some scientists, like population geneticists define evolution in a more broad sense by referring to the net change in allele frequency over generations. Both definitions are valid and reliable however, some scientists claim that the allele-frequency definition omits essential aspects of the evolution process.<br><br>Origins of Life<br><br>A key step in evolution is the development of life. This occurs when living systems begin to develop at the micro level, within cells, for example.<br><br>The origins of life are an important issue in many areas, including biology and the field of chemistry. The origin of life is a subject of interest in science because it is a challenge to the theory of evolution. It is often referred to "the mystery" of life or "abiogenesis."<br><br>The idea that life could be born from non-living things was called "spontaneous generation" or "spontaneous evolutionary". This was a common belief prior to Louis Pasteur's experiments proved that the creation of living organisms was not possible by the natural process.<br><br>Many scientists believe it is possible to go from nonliving substances to living ones. However, the conditions required are extremely difficult to reproduce in the laboratory. This is why scientists investigating the beginnings of life are also interested in determining the physical properties of early Earth and other planets.<br><br>The development of life is dependent on a number of complex chemical reactions which cannot be predicted by simple physical laws. These include the reading of long, information-rich molecules (DNA or RNA) into proteins that perform a function and the replication of these intricate molecules to generate new DNA or sequences of RNA. These chemical reactions can be compared to the chicken-and-egg problem that is the emergence and growth of DNA/RNA,  무료 에볼루션 - [https://botdb.win/wiki/The_12_Most_Unpleasant_Types_Of_Baccarat_Evolution_Tweets_You_Follow https://botdb.Win/] - a protein-based cell machinery, is required to begin the process of becoming a living organism. But without life, the chemistry required to create it is working.<br><br>Research in the area of abiogenesis requires cooperation among scientists from various fields. This includes prebiotic scientists,  [http://locomodu.com/bbs/board.php?bo_table=free&wr_id=543303 에볼루션 무료체험] astrobiologists and planet scientists.<br><br>Evolutionary Changes<br><br>The term "evolution" today is used to describe the general changes in genetic traits over time. These changes may result from adaptation to environmental pressures, as discussed in the entry on Darwinism (see the entry on Charles Darwin for background) or natural selection.<br><br>This is a process that increases the frequency of genes in a species that offer an advantage in survival over other species and causes an ongoing change in the appearance of a population. The specific mechanisms behind these changes in evolutionary process include mutation, reshuffling of genes during sexual reproduction, and also gene flow between populations.<br><br>While reshuffling and mutation of genes occur in all living organisms The process through which beneficial mutations are more prevalent is referred to as natural selection. This happens because, as noted above those who have the beneficial trait tend to have a higher reproduction rate than those who do not have it. This difference in the number of offspring born over a long period of time can result in a gradual change in the average number advantageous traits within a group.<br><br>An excellent example is the growth of beak size on various species of finches on the Galapagos Islands, which have developed beaks with different shapes to allow them to more easily access food in their new home. These changes in form and shape can aid in the creation of new organisms.<br><br>The majority of the changes that occur are caused by one mutation, but sometimes, several changes occur at once. The majority of these changes could be harmful or neutral, but a small number may have a positive effect on survival and reproduce with increasing frequency as time passes. This is the mechanism of natural selection, and  [https://kingranks.com/author/clavejaguar0-1922742/ 에볼루션 카지노] 게이밍 ([https://www.bioguiden.se/redirect.aspx?url=https://sehested-hermansen-4.technetbloggers.de/are-you-responsible-for-the-evolution-korea-budget-10-unfortunate-ways-to-spend-your-money Bioguiden.se]) it can, over time, produce the accumulating changes that eventually lead to a new species.<br><br>Some people confuse the notion of evolution with the notion that the traits inherited from parents can be altered by conscious choice, or through use and abuse, a concept called soft inheritance. This is a misinterpretation of the biological processes that lead to evolution. It is more accurate to say that evolution is a two-step, separate process that involves the forces of natural selection as well as mutation.<br><br>Origins of Humans<br><br>Modern humans (Homo sapiens) evolved from primates - a group of mammals that includes chimpanzees and gorillas and bonobos. The earliest human fossils show that our ancestors were bipeds, walking on two legs. Genetic and biological similarities show that we have a close relationship with the chimpanzees. In fact, our closest relatives are chimpanzees of the Pan genus. This includes pygmy and bonobos. The last common ancestor shared between modern humans and chimpanzees was between 8 and 6 million years old.<br><br>As time has passed humans have developed a range of traits, including bipedalism as well as the use of fire. They also developed advanced tools. It's only in the last 100,000 years that we've developed the majority of our essential characteristics. They include language, a large brain, the capacity to construct and use sophisticated tools, and a the diversity of our culture.<br><br>Evolution occurs when genetic changes enable members of the group to better adapt to the environment. This adaptation is triggered by natural selection, which is a process by which certain traits are favored over other traits. Those with the better adaptations are more likely to pass on their genes to the next generation. This is how all species evolve and forms the basis of the theory of evolution.<br><br>Scientists refer to it as the "law of Natural Selection." The law states that species which share a common ancestor tend to develop similar traits over time. This is because those characteristics make it easier for them to live and reproduce in their natural environment.<br><br>Every organism has a DNA molecule that contains the information needed to control their growth and development. The DNA molecule is made up of base pairs that are spirally arranged around phosphate molecules and sugar molecules. The sequence of bases in each string determines the phenotype or the appearance and behavior of a person. Different mutations and reshuffling of the genetic material (known as alleles) during sexual reproduction cause variations in a population.<br><br>Fossils from the first human species, Homo erectus, and Homo neanderthalensis have been found in Africa, Asia and Europe. Despite some differences they all support the notion that modern humans first appeared in Africa. Evidence from fossils and genetics suggest that early humans moved from Africa into Asia and then Europe.