Evidence for Evolution

Since the Darwin era, science has made remarkable progress in the field of graduate students. One of the most useful advances is the development of molecular biology. In this field, scientists are studying proteins and other molecules that control life processes. Although these molecules can evolve like whole organisms, some important molecules are highly conserved in species. Slight changes over time in these conservative molecules (often called molecular clocks) can help to clarify the evolutionary events of the past

The key to using biomolecules as molecular clock is the assumption of neutral evolution. This hypothesis suggests that most of the molecular structure's variability does not affect the function of the molecule. This is because most fluctuations occur outside the functional domain of the molecule. Changes that do not affect function are called "neutral substitutions" and their accumulation is not affected by natural selection. As a result, neutral substitution occurs at a fairly regular rate, but the rate varies from molecule to molecule.

However, not all molecules produce excellent molecular timepieces. In order to act as a molecular clock, the molecule must fulfill two requirements: 1) it must be present in all organisms studied; 2) strongly functional so that the functional region is highly conserved It must be under constraints. Examples of molecules used to study evolution are cytochrome c (which is essential for the respiratory pathway), and ribosomal RNA for protein synthesis.

Once a good molecular clock is identified it is very easy to use it to compare species. The most complicated step is to compare molecular arrangements. Sequences of molecules in different species must be compared so that the number of different amino acids or nucleobases can be calculated. This number is then plotted against the rate at which known molecules undergo neutral base pair substitution to determine when the two species ultimately share a common ancestor. Depending on the substitution rate, the molecule can be used to determine an ancient relationship or a relatively new relationship. Ribosomal RNA is most frequently used in combination with fossil information to identify relationships between certain species since very long since the substitution rate is very slow.

Many phrases, including students "Critically analyze the evidence of evolution" and requiring to learn "Evidence evidence and evidence" to study "both strengths and weaknesses" It has been used to promote "evidence for evolution" approach. The theory that evolution, "behave as evolution theory" is not a fact. "The teacher also has room for controversy of the professor in discovering the" professional omnidirectional view on origins "and the institute's slogan. "Fuzzy professor controversy" is its power: the media source The public said to us that evolution is socially controversial, and that evolution is controversial among scientists. "Professor controversy" is not a serious problem that scientists claim, rather than meaning that teachers ask students to discuss scientific issues that are practically controversial to the students, and this is a teacher's It is advice.

Since I have no choice but to teach controversy, I really decided to teach it. Let us examine all the facts and evidence, let us let the evidence explain everything. In practice, this requires evolution of education in a more practical and practical way than generally taught. Gravity is around us and evolution is so. Why does your brain read the expression of your dog? Well, there are many things in the data. In 1776, Adam Smith wrote the "National Wealth Theory" which is the founding text of capitalism. Charles Darwin announced "Origin of Species" in 1859. Like members of the tribe of Newton and Papua New Guinea, Adams Miss did not touch Charles Darwin's data. saw. Dawkins did not touch everything I saw. Dawkins does not know that the theory of evolution ultimately wins, if you really teach arguments about evolution theory. Why the question? Why do scientists do not believe that facts can talk for themselves?