Yes
DNA repair is a collection of processes by which a cell identifies and corrects damage to the DNA molecules that encode its genome. In order to repair damage to one of the two paired molecules of DNA, there exist a number of excision repair mechanisms that remove the damaged nucleotide and replace it with an undamaged nucleotide complementary to that found in the undamaged DNA strand. Best Answer: There is cellular machinery that repairs damaged DNA. For example, thymine tends to combine with adjacent thymine to form a thymine dimer when exposed to ultraviolet light. Report Abuse. DNA repair is done by the enzyme DNA polymerase 1 and DNA polymerase 2. For a brief study on the same here-http://users.rcn.com/jkimball.ma.ultrane... Source(s):  2. Nucleotide excision repair (NER), which recognizes bulky, helix-distorting lesions such as pyrimidine dimers and 6,4 photoproducts. A specialized form of NER known as transcription-coupled repair deploys NER enzymes to genes that are being actively transcribed. Report Abuse. DNA repair is done by the enzyme DNA polymerase 1 and DNA polymerase 2. For a brief study on the same here-http://users.rcn.com/jkimball.ma.ultrane... Source(s):  Numerous studies have found that chlorella helps our DNA repair itself-and packed with chlorophyll, chlorella adds an alkaline kick that comes in a structure that's similar to the hemoglobin of healthy blood. To add chlorella to your diet, try adding a teaspoon to fresh apple juice or a fruit smoothie each day. Cat's claw has been repeatedly shown to help our DNA repair itself and also to prevent further damage. In one human trial, participants taking the herb for just eight weeks showed significant improvements in DNA repair. The DNA repair ability of a cell is vital to the integrity of its genome and thus to the normal functionality of that organism. Many genes that were initially shown to influence life span have turned out to be involved in DNA damage repair and protection. In order to repair damage to one of the two paired molecules of DNA, there exist a number of excision repair mechanisms that remove the damaged nucleotide and replace it with an undamaged nucleotide complementary to that found in the undamaged DNA strand. The rate of DNA repair is dependent on many factors, including the cell type, the age of the cell, and the extracellular environment. In order to repair damage to one of the two paired molecules of DNA, there exist a number of excision repair mechanisms that remove the damaged nucleotide and replace it with an undamaged nucleotide complementary to that found in the undamaged DNA strand. As a consequence, the DNA repair process is constantly active as it responds to damage in the DNA structure. When normal repair processes fail, and when cellular apoptosis does not occur, irreparable DNA damage may occur, including double-strand breaks and DNA crosslinkages (interstrand crosslinks or ICLs). In order to repair damage to one of the two paired molecules of DNA, there exist a number of excision repair mechanisms that remove the damaged nucleotide and replace it with an undamaged nucleotide complementary to that found in the undamaged DNA strand. Scheinfeld: If DNA repair does not take place, defective DNA is present in the cell and this leads to defective RNA and the translation of defective RNA into non-functional or defective proteins in the ribosome. A variety of rare diseases are related to a total lack of any of a host of DNA repair enzymes. Base excision repair (BER) fixes damage to a single nucleotide caused by oxidation, alkylation, hydrolysis or deamination. The base is removed with glycosylase and ultimately replaced by repair synthesis with DNA ligase.
https://en.wikipedia.org/wiki/DNA_repair https://answers.yahoo.com/question/index?qid=20110103202231AAXTbpP https://answers.yahoo.com/question/index?qid=20110103202231AAXTbpP http://www.naturalnews.com/028736_DNA_damage_repair.html https://en.wikipedia.org/wiki/DNA_repair https://en.wikipedia.org/wiki/DNA_repair https://en.wikipedia.org/wiki/DNA_repair http://www.drpasswater.com/nutrition_library/dnarepair.html
does dna repair itself