The most common form of DNA which has right handed helix and proposed by Watson and Crick is called B-form of DNA or B-DNA. In addition, the DNA may be able to exist in other forms of double helical structure. These are A and C forms of double helix which vary from B- form in spacing between nucleotides and number [...]
In this article we will discuss about the definition and mechanisms of DNA repair. Definition of DNA Repair: One of the main objectives of biological system is to maintain base sequences of DNA from one generation to the other. Changes in DNA sequence arise during replication of DNA damage by chemical mutagens and radiation. During replication if incorrect nucleotides have [...]
In this article we will discuss about:- 1. Definition of Recombinant DNA 2. History of Recombinant DNA 3. Milestones. Definition of Recombinant DNA: For centuries humans have been altering the genetic makeup of organisms by selective breeding of plant and animals. The deliberate modification in genetic material of an organism by changing the nucleic acid directly is called genetic engineering [...]