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24 Σεπ 2018 · To understand the structure and chemistry of DNA and the significance of the double helix. Objectives. After this chapter, you should be able to. explain the structural basis for the directionality of polynucleotide chains. describe how hydrogen bonding and geometry dictate base pairing. describe the forces that stabilize the DNA double helix.
2 Μαρ 2012 · This document discusses the structure, properties, and functions of DNA. It describes DNA as a polymer composed of deoxyribonucleotides that carries the genetic information found in chromosomes, mitochondria, and chloroplasts.
Read on to explore DNA meaning, structure, function, DNA discovery and diagram in complete detail. What is DNA? “DNA is a group of molecules that is responsible for carrying and transmitting the hereditary materials or the genetic instructions from parents to offsprings.”
DNA structure. DNA is a double stranded molecule consists of 2 polynucleotide chains running in opposite directions. Both strands are complementary to each other. The bases are on the inside of the molecules and the. 2 chains are joined together by double H-bond between A and T and triple H-bond between C and G.
Let us recapitulate the chemical structure of a polynucleotide chain (DNA or RNA). A nucleotide has three components – a nitrogenous base, a pentose sugar (ribose in case of RNA, and deoxyribose for DNA), and a phosphate group. There are two types of nitrogenous bases – Purines (Adenine and Guanine), and Pyrimidines (Cytosine, Uracil and ...
4 Νοε 2023 · The NCERT Class 10th Science textbooks are well known for it’s updated and thoroughly revised syllabus. The NCERT Science Books are based on the latest exam pattern and CBSE syllabus. NCERT keeps on updating the Science books with the help of the latest question papers of each year.
DNA was known to be a long polymer composed of only four types of subunits, which resemble one another chemically. Early in the 1950s, DNA was first examined by x-ray diffraction analysis, a technique for determining the three-dimensional atomic structure of a molecule (discussed in Chapter 8).
