Dna

Imagine that a convicted child molester is released from jail and that he is now traveling around the country looking for work. One day this criminal returns to his old ways and he attacks a young child whose dead body is found in a deserted field the following day. The only trace of evidence at…

Structure DNA and RNA are nucleic acids. Nucleic acids consists of minor particles called nucleotides. In DNA and RNA, these nucleotides contain four nucleobases —nitrogenous bases or bases — two purine and two pyrimidine bases. DNA is found in the center of a cell (atomic DNA). It has two nucleotide strands which comprise of its…

DNA fingerprinting (the use of a persons DNA to identify them) has become a hot topic in the field of law enforcement as well as the entire world. The controversy exists on whether or not it should be admitted in court as evidence at this time. Some experts believe that the present technology allows DNA…

Mechanism of action of ciprofloxacin DNA synthesis is interfered by sealing DNA gyrase ( topoisomerase II ) and topoisomerase IV. Two sets of subunits, 2GyrA and 2GyrB that are encrypted by genes gyrA and gyrB severally consists DNA gyrase enzyme. DNA rupturing and association are processed by genes gyrA. Unique negative supercoiling continuation of DNA…

The steps involved in the biosynthesis of proteins including the roles of RNA Protein biosynthesis is the process in which the DNA codes specifically to produce many amino acid monomers and proteins. It Is a necessary process for the development, growth and maintenance of a cell. Proteins are needed in the cell for many reasons,…

Nasopharyngeal Carcinoma was first documented in 1901 and described clinically in 1921. (We I* et al.2007). The malignancy continued to evolve reaching a global death rate of 50,800 deaths in 2012. The epidemiology is still perplexing. Worldwide it is an uncommon tumour. Nevertheless, in certain regions such as China, NPC occur with a drastically high…

The Gene regulation can occur at any of the step leading fro DNA to protein product. It is tightly controlled in order to express the required level of gene product at specific time, in specific cell type, and in response to complex changes in the environment. Gene expression is also regulated by multiple posttranscriptional mechanism,…

In SELEX method, an RNA or DNA library of oligonucleotides is chemically synthesized and each RNA and DNA strands in libraries will contain 40-100 base pair which randomly builds a flanked region. Ordinary, 5′ and 3′ PCR primer binding sequences create a flanked region in the DNA or RNA library. Generally, DNA aptamers contain 1014-1015…

Researchers utilise a variety of processes to learn about the natural phenomena. The fundamental investigation process is based on the scientific method. The scientific method is a guide scientists use to logically examine and interpret the information collected by the following steps sequentially, (Castillo, 2013), to utilise their knowledge gained from their study in an…

DNA : Criminal Identification Validity and Doubts DNA, although controversial on accuracy, has provided a new means of identifying criminals where there is little physical evidence. This allows you to take a piece of hair, a spot of blood, or skin tissue and make a positive identification on a suspect. Since it’s first use by…