Jan 21, 2021 · The double helix structure of DNA was first discovered in 1953 by James Watson (an American Biologist), Francis Crick (an English Physicist), and Rosalind Franklin (an English Chemist). Though only Watson and Crick were credited with the discovery of the double helix, they are believed to have made their discovery with the help of Franklin’s ...

3 days ago · DNA, organic chemical of complex molecular structure found in all prokaryotic and eukaryotic cells. It codes genetic information for the transmission of inherited traits. The structure of DNA was described in 1953, leading to further understanding of DNA replication and hereditary control of cellular activities.

As per the DNA structure, the DNA consists of two chains of polynucleotides. Also Read: Genetic Material For more detailed information on DNA meaning, diagram, its types, DNA structure and function, or any other related topics, explore at BYJU’S Biology.

Biologists in the 1940s had difficulty in accepting DNA as the genetic material because of the apparent simplicity of its chemistry. 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 ...

Apr 8, 2019 · A lot of molecular biology is dependent on the isolation and manipulation of DNA, for the study of living processes. Structure of DNA. When its definitive role in heredity was established, understanding DNA’s structure became important. Previous work on protein crystals guided the interpretation of crystallization and X-Ray differaction of DNA.

Aug 3, 2023 · The most widely accepted structure of DNA is right-handed helix DNA also known as the B-form of DNA, which is 1.9 nm in diameter. These helical chains run anti-parallel to each other, one polynucleotide chain runs from 5’ to 3’ and the …

Sep 13, 2023 · Base Stacking: The flat, planar structure of the nitrogenous bases allows them to stack on top of each other within the double helix. This base-stacking interaction stabilizes the DNA molecule and contributes to its structure and shape. Major and Minor Grooves: The base pairing along the helix forms grooves on the surface of the DNA double ...

Mar 17, 2022 · Figure \(\PageIndex{2}\): (a) Each DNA nucleotide is made up of a sugar, a phosphate group, and a base.(b) Cytosine and thymine are pyrimidines. Guanine and adenine are purines. The phosphate group of one nucleotide bonds covalently with the sugar molecule of the next nucleotide, and so on, forming a long polymer of nucleotide monomers.

May 30, 2024 · The elucidation of DNA structure is regarded as a watershed moment in the history of contemporary biology. The structure of the DNA double helix resembles a ladder that has been bent. The distinguishing characteristics of the Watson-Crick model of DNA (now known as B-DNA) are outlined below.

ADVERTISEMENTS: Let us make an in-depth study of the deoxyribonucleic acid. After reading this article you will learn about: 1. Deoxyribonucleic Acid (DNA) 2. Structure of DNA 3. Functions of DNA 4. Packaging of DNA and 5. Physical Properties of DNA. Deoxyribonucleic Acid (DNA): Deoxyribonucleic acid, also abbreviated as DNA, is the principal informational macromolecule […]