replication of dna

DNA replication, DNA replication or DNA synthesis, cell division Prior to double-stranded DNA'S copy the process of. Copied new DNA strands are almost entirely the same, but from time to time due to copying errors çoğalmadaki excellent not (see mutation), and resulting in both an old and a spiral new made from yarn. This semi-conservative replication is called. DNA replication process consists of three phases: initiation, replication and termination Initiation Starting several factors alamasında replication center'What is collected. DNA replication in the center opens, the drop-down yarns are partially a "replication bubble" form, a replication at both ends fork found. Each enzyme group center runs away and moves to open the DNA strands new yarn synthesis. Enzymes involved in this stage, collectively, the "pre-replication complex is called. They are: Helicase: DNA leads.Primaz: Required for DNA replication RNA "Primer" strands synthesis. DNA haloenzim: The real growth in process a collection of enzymes that perform The proliferation of DNA polymerase process When it comes to the end operation parallel Due to the lack of another problem arises: yarn trim the 5 'end of the RNA primer strand connect to not enough space, so that the DNA polymerase Connect The end of the copy, it will be impossible. Solution of the problem in bacteria (or prokaryoticLarda) is very easy: The circular structure of DNA in these organisms, so that the DNA of a "tip" there. More complex eukaryoticLarda this "clever" is solved. Telomere Every living thing is fixed according to the syntax of the ends of DNA, called nucleotides (human 5 'GGGTTA 3') and in this short sequence is repeated thousands of times. Also telomerase enzyme along with the name corresponding to the telomere repeat sequence is a short strand of RNA primer. Telomerase DNA replication process telomere at the end of Connect carried on their own using the primer strand extends telomeres. Thus, telomere RNA lining Connect copy, it is possible, but the telomerase gene to prolong the long strands of DNA strand opposite the other remains. This is a long remaining "single strand" in some proteins help bent DNA end in itself creates a small ring. Ring become not exposed to enzymes break down due to receipt of single-stranded DNA molecules. The final stage of the copying errors that may have occurred during the synthesis of DNA is determined by reading some enzimlerce, if you have copied the wrong nuclease defective parts enzyme called DNA breaks, DNA polymerase then fills in the gaps. Figure 101: DNA helix stabilization to prevent the arms from each other leaving again dolanmalarını enzymes (HSE) fixed amounts of both arms. In the center, showing a separation of the DNA arms. Figure 102: After leaving the two DNA polymerase enzymes that are missing in both halves of the arm, complete with materials present environment. As is known, the cells divide and multiply. So what happens to DNA as a result of this division? There is a single chain of DNA in the cell. However, the newly formed cell will also need a DNA. To resolve this deficit every stage of the process occurs in a separate a series of miracle. As a result, a copy of the DNA of the cell division shortly before the new cell is created and transferred. DNA to replicate itself is divided into two parts, before the mutual. This event takes place is quite an interesting way. Structure of the middle of the DNA molecule resembles a spiral staircase, by an enzyme called DNA helicase, is divided into two like a zipper. Stabilization of the helix of DNA enzymes to prevent the arms from each other leaving again dolanmalarını fixed amounts of both arms. (Figure 101) Now divided into two halves of DNA. Both halves of the part that is missing in (equivalents) present in the materials is completed. Shortcomings in the completion work is carried out by DNA polymerase. Thus, the two new DNA molecules are produced. (Figure 102) Match several times during the emergence of new DNA molecules are controlled by the controller enzymes. If you have made a mistake-that these errors are detected and corrected immediately-may be crucial. Correct password instead kopartılıp actually brought and mounted. All these operations are made so that at a dizzying pace, while generating up to 3,000 digits of nucleotide enzymes in charge of all these steps and should be checked several times by the corrections made. (Figure 103) Produced new DNA molecule, as a result of external influences can be made more errors than normal. This time, the cell ribosomes, DNA, DNA repair enzymes begin to produce in accordance with the orders. Thus, the DNA will be protected and shall ensure the continuation of the lineage. (Figure 104) Here is the whole day, you never know when your life to continue without any problems in your body admirable thoroughness and responsibility made in the understanding of the numerous procedures and controls, measures are taken. Everyone is completely and successfully fulfill the task. Here is the smallest number of atoms and molecules of the Almighty Allah, the greatest of our lives and the beautiful healthy In order to maintain a service, has given way. Biriyse most admirable aspects of this topic, as well as the structure of DNA that controls both the production of these enzymes, according to the information stored in DNA and proteins, DNA is made of the orders and control. In the center there is intertwined so great that a system, consisting of such a system gradually becomes in any way, this is not possible by chance. Because the enzyme is DNA to the DNA of the enzyme to be, that is for both of the cell, membrane, there must be complete until all the other complex organelles. Succession of organisms so-called "useful coincidences" as a result of "gradual" claiming to have developed the theory of evolution, as in many aspects than the above-mentioned before that we have DNA or enzymes that are now in the face of unanswered questions. DNA and the enzyme are required to have at the same time, which put forward the theory of evolution is an impossible dream of the realization of mechanisms.