commit 86e883dbc9944942c4bb13065f41948c40ee9f8b Author: evolution2945 Date: Mon Dec 16 08:48:00 2024 +0000 Add 15 Best Documentaries On Evolution Site diff --git a/15-Best-Documentaries-On-Evolution-Site.md b/15-Best-Documentaries-On-Evolution-Site.md new file mode 100644 index 0000000..749eb87 --- /dev/null +++ b/15-Best-Documentaries-On-Evolution-Site.md @@ -0,0 +1,61 @@ +The Berkeley Evolution Site + +Teachers and students who visit the Berkeley site will find a wealth of resources to assist them in understanding and teaching evolution. The resources are organized into optional learning paths for example "What does T. rex look like?" + +Charles Darwin's theory of natural selection explains that over time creatures that are better able to adapt biologically to changing environments do better than those that are not extinct. This process of biological evolution is the main focus of science. + +What is Evolution? + +The term "evolution" has a variety of nonscientific meanings, including "progress" or "descent with modification." Scientifically, it refers to a process of change in the characteristics of living things (or species) over time. This change is based in biological terms on natural selection and drift. + +Evolution is a key tenet in modern biology. It is a concept that has been proven by thousands of scientific tests. Unlike many other scientific theories, such as the Copernican theory or the germ theory of disease, the evolution theory does not address issues of religion or God's existence. + +Early evolutionists, such as Jean-Baptiste Lamarck and Erasmus Darwin (Charles's grandfather), believed that certain physical traits were predetermined to change, in a step-like manner, as time passes. This was referred to as the "Ladder of Nature" or scala naturae. Charles Lyell first used this term in 1833 in his Principles of Geology. + +Darwin presented his theory of evolution in his book On the Origin of Species which was written in the early 1800s. It asserts that all species of organisms have common ancestors that can be traced by fossils and other evidence. This is the current understanding of evolution, which is supported by many research lines in science that include molecular genetics. + +Scientists don't know how organisms have evolved however they are certain that natural selection and genetic drift are responsible for the evolution of life. People with desirable traits are more likely to live and reproduce, and they transmit their genes to the next generation. Over time the gene pool gradually changes and develops into new species. + +Certain scientists also use the term"evolution" to refer to large-scale changes in evolutionary processes like the creation of an entirely new species from an ancestral species. Other scientists, such as population geneticists, define the term "evolution" more broadly by referring a net change in the frequency of alleles across generations. Both definitions are valid and acceptable, however certain scientists argue that allele frequency definitions do not include important aspects of evolutionary process. + +Origins of Life + +The emergence of life is a crucial stage in evolution. The emergence of life occurs when living systems start to develop at a microscopic scale, [에볼루션사이트](https://evolutionkr.kr/) for instance within cells. + +The origin of life is an important subject in many areas that include biology and the field of chemistry. The nature of life is a topic that is of immense interest to scientists because it is a challenge to the theory of evolution. It is often referred to as "the mystery of life," or "abiogenesis." + +The notion that life could be born from non-living matter was known as "spontaneous generation" or "spontaneous evolutionary". This was a common belief prior to Louis Pasteur's tests showed that the creation of living organisms was not possible through an organic process. + +Many scientists believe it is possible to move from living to nonliving substances. However, the conditions needed are extremely difficult to replicate in the laboratory. Researchers interested in the evolution and origins of life are also eager to learn about the physical characteristics of the early Earth as well as other planets. + +The development of life is dependent on a variety 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 carry out some function and the replication of these complex molecules to generate new DNA or sequences of RNA. These chemical reactions are often compared with the chicken-and-egg dilemma of how life came into existence: The emergence of DNA/RNA and protein-based cell machinery is crucial to the birth of life, however, without the appearance of life the chemical process that allows it does not appear to work. + +Abiogenesis research requires collaboration among scientists from various fields. This includes prebiotic scientists, astrobiologists, and planetary scientists. + +Evolutionary Changes + +The term "evolution" is used to describe the general changes in genetic traits over time. These changes can result from adaptation to environmental pressures, as described in the entry on Darwinism (see the entry on Charles Darwin for background) or may result from natural selection. + +This mechanism also increases the frequency of genes that confer a survival advantage in an animal, resulting in an overall change in the appearance of an entire group. These evolutionary changes are triggered by mutations, reshuffling of genes during sexual reproduction and gene flow. + +While reshuffling and mutation of genes occur in all organisms and the process by which beneficial mutations become more common is referred to as natural selection. This happens because, as noted above those with the beneficial trait tend to have a higher reproduction rate than those who do not have it. This differential in the number of offspring produced over many generations can result in a gradual shift in the number of advantageous traits within a group. + +This is evident in the evolution of different beak shapes for finches from the Galapagos Islands. They have developed these beaks so that they can eat more quickly in their new home. These changes in shape and form can also help create new organisms. + +The majority of the changes that occur are caused by one mutation, but sometimes, several changes occur at the same time. Most of these changes may be negative or even harmful however, a few can have a beneficial impact on survival and reproduce and increase their frequency as time passes. This is the way of natural selection and it is able to eventually result in the cumulative changes that ultimately lead to an entirely new species. + +Some people confuse the notion of evolution with the idea that inherited characteristics can be altered through conscious choice or use and abuse, a notion called soft inheritance. This is a misunderstanding of the biological processes that lead up to evolution. It is more accurate to say that the process of evolution is a two-step, independent process that involves the forces of natural selection as well as mutation. + +Origins of Humans + +Humans of today (Homo Sapiens) evolved from primates, which is a group of mammal species which includes chimpanzees as well as gorillas. The earliest human fossils show that our ancestors were bipeds, walkers with two legs. Genetic and biological similarities suggest that we have a close relationship with chimpanzees. In fact, we are most closely connected to chimpanzees belonging to the Pan genus that includes pygmy and bonobos and pygmy-chimpanzees. The last common ancestor of modern humans and chimpanzees lived between 8 and 6 million years ago. + +Over time, humans have developed a number of characteristics, such as bipedalism and the use fire. They also developed advanced tools. It's only in the last 100,000 years that we've developed the majority of our key traits. These include a big brain that is sophisticated human ability to create and use tools, as well as the diversity of our culture. + +The process of evolution occurs when genetic changes allow individuals in a group to better adapt to their surroundings. This adaptation is triggered by natural selection, a process whereby certain traits are more desirable than other traits. The ones who are better adapted are more likely to pass on their genes to the next generation. This is the way all species evolve and is the basis for the theory of evolution. + +Scientists refer to it as the "law of Natural Selection." The law states that species that have a common ancestor are more likely to develop similar characteristics over time. It is because these traits allow them to live and reproduce in their environment. + +All organisms possess the DNA molecule, which contains the information necessary to direct their growth. The DNA molecule is composed of base pairs that are arranged in a spiral around phosphate molecules and sugar molecules. The sequence of bases in each strand determines the phenotype, the characteristic appearance and behavior of a person. Variations in a population are caused by mutations and reshufflings of genetic material (known collectively as alleles). + +Fossils from the first human species, Homo erectus, and Homo neanderthalensis have been found in Africa, Asia and Europe. These fossils, despite differences in their appearance all support the theory that modern humans' ancestors originated in Africa. The fossil evidence and genetic evidence suggest that early humans migrated from Africa into Asia and then Europe. \ No newline at end of file