This presentation discusses the structure of DNA. It defines DNA as the molecule containing genetic instructions for development, life and reproduction. DNA is made up of nucleotides containing phosphate, sugar and nitrogen base groups. The bases adenine, thymine, guanine and cytosine form the genetic code by their order. Nucleotides bond to form two strands coiled in a double helix structure, with bases pairing between strands. DNA is tightly coiled to fit into chromosomes, which contain the DNA molecule within cell nuclei. The double helix structure was discovered in 1953 by Watson, Crick, Wilkins and Franklin, revealing how DNA can carry biological information.
This power point presentation explains double helical structure of DNA as proposed by Watson and Crick (1953).Attempts have also been made to high light the valuable contributions made by Rosalind Franklin and Wilkins. Brief details of different types of DNA have also been included.
This power point presentation explains double helical structure of DNA as proposed by Watson and Crick (1953).Attempts have also been made to high light the valuable contributions made by Rosalind Franklin and Wilkins. Brief details of different types of DNA have also been included.
History of DNA. introduction of DNA with short history and findings. different types of DNA with structures variations. A -DNA, B- DNA, C- DNA E- DNA D- DNA And Z DNA Detail information of these DNA with their comparison tables, different types of unusual DNA and sequences. Functions of DNA with their explanations . Nucleic acid chemical basis : Denaturation and annealing of DNA with factors for that. New DNA.
DNA is a molecule composed of two chains that coil around each other to form a double helix carrying genetic instructions for the development, functioning, growth and reproduction of all known organism. DNA are nucleic acids;. The two DNA strands are also known as polynucleotides as they are composed of simpler monomeric units called nucleotides. Each nucleotide is composed of one of four nitrogen-containing nucleo bases (cytosine[C], guanine[G], adenine[A] or thymine[T]), a sugar called deoxyribose, and a phosphate group.
Nucleotide :- nitrogenous base,sugar,phosphate
Nucleoside :- :- nitrogenous base,sugar
DNA - The building blocks of all life - lecture notes from a presentation by Jill Pullan to Mansfield U3A Science and Technical group.
http://www.mansfield-u3a.org.uk/.
History of DNA. introduction of DNA with short history and findings. different types of DNA with structures variations. A -DNA, B- DNA, C- DNA E- DNA D- DNA And Z DNA Detail information of these DNA with their comparison tables, different types of unusual DNA and sequences. Functions of DNA with their explanations . Nucleic acid chemical basis : Denaturation and annealing of DNA with factors for that. New DNA.
DNA is a molecule composed of two chains that coil around each other to form a double helix carrying genetic instructions for the development, functioning, growth and reproduction of all known organism. DNA are nucleic acids;. The two DNA strands are also known as polynucleotides as they are composed of simpler monomeric units called nucleotides. Each nucleotide is composed of one of four nitrogen-containing nucleo bases (cytosine[C], guanine[G], adenine[A] or thymine[T]), a sugar called deoxyribose, and a phosphate group.
Nucleotide :- nitrogenous base,sugar,phosphate
Nucleoside :- :- nitrogenous base,sugar
DNA - The building blocks of all life - lecture notes from a presentation by Jill Pullan to Mansfield U3A Science and Technical group.
http://www.mansfield-u3a.org.uk/.
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DNA is a highly complex, intricate and extraordinary macromolecule found within all living cells. DNA is a "biochemical noun" and can be defined as "...a self- .... In other words, DNA refers to the molecules inside cells that carry genetic information and pass it from one generation to the next. The scientific name for DNA .... Free Essays from 123 Help Me | acid (DNA) is a molecule, a material rather, that is present in almost all living organisms. It is self-replicating and is .... 17. 2. 2022 ... Dna is the genetic fabric which is present in all the cells of the body. This molecule present a few characteristics, as VNTR, special present .... 24. 4. 2020 ... Genetic ancestry testing holds the potential to identify the geographic origins of an individual's ancestors, ancestral lineages, and relatives, .... 25. 4. 2022 ... 2022 DNA Day Essay Contest: Full Essays · 1st Place: Man Tak Mindy Shie, Grade 12. Teacher: Dr. Siew Hwey Alice Tan School: Singapore .... DNA, or Deoxyribonucleic acid, is two self replicating biopolymer strands that contain biological information that is necessary for human life. DNA is what .... DNA, also known as deoxyribonucleic acid, is a genetic information-carrying molecule that is essential for the development, growth, and reproduction of all .... DNA stand for deoxyribonucleic acid. RNA stands for ribonucleic acid. They share some similarities, such as both being nucleic acids.. Free Essay: The Structure and Replication of DNA Introduction The ... The enzyme polymerase is used to add new nucleotides to the growing DNA strands.
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1. Welcome To My Presentation
DNA Double Helix Structure
MD. ASMAUL HAQUE MOLLIK
Faculty of Agriculture
REG:AGRW2015000125
Term: Winter 2016
EBAUB
EXIM BANK AGRICULTURAL UNIVERSITY BANGLADESH
2. Definition of DNA
Deoxyribonucleic acid or DNA is a molecule that contains the
instructions an organism needs to develop, live and
reproduce. These instructions are found inside every cell,
and are passed down from parents to their children.
4. DNA Double Helix structure
DNA is made up of molecules called nucleotides. Each nucleotide
contains a phosphate group, a sugar group and a nitrogen base.
The four types of nitrogen bases are adenine (A), thymine (T),
guanine (G) and cytosine (C). The order of these bases is what
determines DNA's instructions, or genetic code. Similar to the
way the order of letters in the alphabet can be used to form a
word, the order of nitrogen bases in a DNA sequence forms
genes, which in the language of the cell, tells cells how to make
proteins. Another type of nucleic acid, ribonucleic acid, or RNA,
translates genetic information from DNA into proteins.
The entire human genome contains about3 billion bases and
about 20,000 genes.
5. CON’T
Nucleotides are attached together to form two long strands
that spiral to create a structure called a double helix. If you
think of the double helix structure as a ladder, the
phosphate and sugar molecules would be the sides, while the
bases would be the rungs. The bases on one strand pair with
the bases on another strand: adenine pairs with thymine,
and guanine pairs with cytosine.
6. CON’T
DNA molecules are long — so long, in fact, that they can't fit
into cells without the right packaging. To fit inside cells, DNA
is coiled tightly to form structures we call chromosomes.
Each chromosome contains a single DNA molecule. Humans
have 23 pairs of chromosomes, which are found inside the
cell's nucleus.
7. DNA Double Helix Structure discovery
DNA was first observed by a German biochemist named
Frederich Miescher in 1869. But for many years, researchers
did not realize the importance of this molecule. It was not
until 1953 that James Watson, Francis Crick, Maurice Wilkins
and Rosalind Franklin figured out the structure of DNA — a
double helix — which they realized could carry biological
information. Watson, Crick and Wilkins were awarded the
Nobel Prize in Medicine in 1962 "for their discoveries
concerning the molecular structure of nucleic acids and its
significance for information transfer in living material."
