Dna Is The Amazing Structure Known As A Double Helix

Mitosis: This is the process by which a cell duplicates the chromosomes in its cell nucleus in order to generate two identical daughter nuclei.

Each human being has something called DNA. DNA is described as genetics and an extremely long macromolecule that is the main component of chromosomes and is the material that transfers genetic characteristics in all life forms. DNA constructs of two nucleotide strands coiled around each other in a ladder like arrangement with the sidepieces composed of alternating phosphate and deoxyribose units and the rungs composed of the purine and pyrimidine bases adenine, guanine, cytosine, and thymine. Each chromosome consist of one continuous thread-like molecule of DNA coiled tightly around proteins and contains a portion of the 6,400,000,000 basepairs that make up your DNA.

Mitosis is the process of duplicating nuclear material one cell becomes two cells. A cell contains 46 chromosomes, this is known as diploid. This process involves prophase, metaphase, anaphase, and telophase. Mitosis ensures the continuation of the organism and helps the body build and repair. Meiosis on the other hand is for production of haploid cells, 23 chromosomes, that together with another human, new organisms are created.

Mitosis happens in the reproduction of unicellular organisms and in the addition of cells to a tissue or organ in a multicellular organism.

Mitosis - the division of a cell 's nucleus resulting in two daughter nuclei, each with the same number of chromosomes as the original nucleus.

How DNA replicates is quite a simple process. First, a DNA molecule is "unzipped". In other words, it splits into two strands of DNA at one end of the DNA molecule. This separation will cause a formation of a replication fork.

Mitosis produces two cells, identical to each other and the parent cell. This means that each chromosome is copied exactly. During the mitosis cell cycle there are 6 stages, Interphase, Prophase, Metaphase, Anaphase, Telophase and Cytokinesis. Sometimes the cell divide uncontrollably. This results in a large mass of cells called a tumor. If tumor successfully gets into other body tissue the result is

DNA, Deoxyribonucleic Acid, is the basic structure for all life, it is the blueprint, the instruction manual, on how to build a living organism. DNA is made up of four nitrogen bases, adenine, thymine, cytosine, and guanine which are connected by sugar-phosphate bonds. Through a process called Protein Synthesis, the nitrogen bases are the code for the creation of amino acids. Essentially, DNA makes amino acids, amino acids make proteins, proteins make organisms. This process has been taking place for much longer than scientists have been able to document. Those scientists are called geneticists and their field is genetics.

In “The Double Helix” by J.D. Watson he tells the story as to how he and Francis Crick discovered the structure of DNA. After reading this book I was able to see how the structure of DNA was discovered since I didn't really have a lot of knowledge as to who discovered DNA besides what the biology book briefly talked about. During this time there was not a lot of people interested in DNA but for the people that were it was almost like a race to see who could discovered it first. Through the book one of their most fierce competition would have to be Maurice Wilkins and Rosalind Franklin. Thanks to their research Watson and Crick were able to discover the structure of DNA first.

Modern laboratory techniques benefits them to remove DNA from tissue samples, thereby tiny amounts of DNA from thousands of individual cells will spill together. Once the DNA is collected and purified, thereby is white, sticky substance that is somewhat translucent. In the past, Rosalind Franklin, used x-ray diffraction, which is needed by researchers to actually visualize the double helix structure of DNA. However, with a standard light microscope it's possible to see chromosome if they are in their most condensed form. Soon after, karyotype was formed through all the visualized chromosome within the cell and captured images of them to be arranged into a composite

In the year 1882 a man by the name of Walter Flemmings found out the process of mitosis in great depth. A German zoologist Otto Bütschli might have discovered a process known as "mitosis", but wasn't able to reach the topic with rich vocabulary. Originally mitosis was discovered in frog, rabbit, and cat cornea cells and described briefly by the Polish histologist Wacław Mayzel in 1875, but Flemmings got the fame because of his explanation. This was discovered by Flemmings in Germany. Now most of you might not know what this is since it is fairly new. This is a process where body cells or somatic cells are produced and the end product is identical to one another. In other words mitosis is a part of the cell cycle when duplicated chromosomes

Cells reproduce genetically identical copies of themselves by cycles of cell growth and division. The cell cycle separates it into four stages. G1 is the period after cell division, and before the start of DNA replication. Cells grow and monitor their environment to determine whether they should initiate another round of cell division. S is the period of DNA synthesis, where cells replicate their chromosomes. G2 is the period between the end of DNA replication and the start of cell division. Cells check to make sure DNA replication has successfully completed, and make any necessary repairs. M is the actual period of cell division, consisting of prophase, metaphase, anaphase, telophase, and cytokinesis.

DNA is an abbreviation of Deoxyribonucleic Acid- a compound carries the genetic coding information for active growth and development of organisms. DNA is a macromolecule made up of genetic material of the cell and includes genetic information for the production of proteins necessary for the body as well as to determine the nature of a person. Similarly, DNA consists of small nucleotide sequences, repetitive, is known for their great diversity in the community. Some repetitive sequences known as STRs (Short Tandem (nucleotides) Repeat) can be used for determining the identity of people through their genetic profile.

Deoxyribonucleic (DNA) is the molecule that hold the genetic information of living things. In our body every cell contains about 2 meters of DNA. DNA is copied every time a cell divides. Deoxyribonucleic (DNA) is made up of two polynucleotide strands. Polynucleotide strands twist around each other, forming a shape that looks like a ladder called a double helix. The two polynucleotide strands run antiaparallel to each other with nitrogenous bases this means that the stands run in opposite directions, parallel to one another. The DNA molecule consists of two backbones chains of sugars and phosphate groups. The organic bases held together by hydrogen bonds. Although bases bonded together are termed paired

Due to the DNA’s specificity, samples can be utilised for identification. DNA is a nucleic acid composed of deoxyribose sugar bound to a phosphate group and one of four nitrogenous bases (adenine, guanine, cytosine and thymine). Each section of these three components are referred to as nucleotides, which are joined to the phosphate or sugar of another nucleotide by strong covalent bonds to form a backbone. The nitrogenous bases are joined to complimentary bases of another nucleotide (adenine with thymine, guanine with cytosine) to create a double stranded molecule (Figure 2). To complete the double helical structure, the molecule coils to compact it’s contents. DNA molecules can contain up to two million base pairs, with a human genome containing approximately 3 million base pairs. The random assortment of nitrogenous bases as well as the numerous mutations within certain DNA sequences, results in genetically diverese DNA molecules and genomes between individials.