Read this article to learn about the composition and structure of DNA and RNA. Introduction: There are two types of nucleic acids, namely deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). Primarily, nucleic acids serve as repositories and transmitters of genetic information. Brief History: DNA was discovered in 1869 by Johann Friedrich Miescher, a Swiss researcher. The demonstration that DNA contained [...]
1. Engineering principles in DNA structure: In 1953 Pauling had observed that physical structure of DNA might be some sort of a-helix. Watson and Crick's model show that by engineering physics DNA is organised as a double helix of nucleotides in which two nucleotide helix were wound around each other. Components were held at certain distances and/or angles to each [...]
DNA is the largest macromolecule that represents the genetic material of the cell. Chemically, DNA is a double helix of two antiparallel polynucleotide chains. Each polynucleotide chain is a linear mixed polymer of four deoxyribotides i.e. deoxyadenylate, deoxyguanylate, deoxycytidylate and thymidylate. Watson-Crick Model of DNA: In 1953, J.D. Watson (an American biologist) and F.H.C. Crick (a British Physicist) proposed the [...]