Chromosomes Deoxyribonucleic acid
DNA. DNA (or deoxyribonucleic acid) is the molecule that carries the genetic information in all cellular forms of life and some viruses. It belongs to a class of molecules called the nucleic acids, which are polynucleotides-that is, long chains of nucleotides. Each nucleotide consists of three components: Second, it can store information in the linear sequence of the nucleotides along each strand. DNA helix showing nitrogenous bases. It is the order of the bases along a single strand that constitutes the genetic code. The four-letter 'alphabet' of A, T, G and C forms 'words' of three letters called codons. DNA molecules are carriers of an organism's genetic information. A cell's chromosomes are made from DNA molecules and associated proteins. This chapter looks at the discovery and structure of DNA-the molecule of life. During protein synthesis RNA molecules transfer genetic information from DNA molecules. They also maintain the structure of a cell's ribosomes-protein-making 'factories'. Unlike DNA, RNA can leave the cell's nucleus. See image 3. Deoxyribonucleic acid (/diˌɒksiˌraɪbɵ.njuːˌkleɪ.ɨk ˈaesɪd/ ; ˈæSɪD) dna is a molecule that carries most of the genetic instructions used in the, development functioning and reproduction of all known living organisms and many. viruses Cell division is essential for an organism to grow, but, when a cell divides, it must replicate the DNA in its genome so that the two daughter cells have the same genetic information as their parent. The double-stranded structure of DNA provides a simple mechanism for DNA replication. Chromosomes. Chromosomes carry hereditary, genetic information in long strings of DNA called genes. Humans have 22 numbered pairs of chromosomes and a single pair of sex chromosomes—XX in females and XY in males. Each chromosomal pair includes one inherited from the father and one from the mother.  The part of the DNA that actually codes for genetic info is nitrogen base. The bases vary from cytosine, guanine, thymine, and adenine. These four bases form millions of combi … nations that code for all the genetic material in a cell. DNA, Genes, and Chromosome Quiz A. Match the following definitions to the correct vocabulary term. ____ 1.) DNA A.) Condensed or compact “rod” of DNA that. carries genetic information. ____ 2.) Gene B.) A segment of DNA that controls protein production. ____ 3.) Chromosome C.) Deoxyribo Nucleic Acid; helical molecule that carries the genetic information of an organism and is passed from parent to offspring. Write the letter on the line of the choice that best answers each question.  Chromosomes, found in the cell nucleus [nucleus: Controls what happens inside the cell. Chromosomes are structures found in the nucleus of most cells. ] , contain many genes. A gene is a section of DNA [DNA: The material inside the nucleus of cells, carrying genetic information. DNA stands for Deoxyribonucleic Acid. ] , which carries coding for a particular protein proteins: organic compounds made up of amino acid molecules. Johann Friedrich Miescher was the first scientist who proposed the existence of a molecule that carries genetic information. He called it nuclein. But it was only in the 1950s that two young scientists, James Watson and Francis Crick, discovered the true genetic information carriers-molecules of DNA and RNA. During protein synthesis RNA molecules transfer genetic information from DNA molecules. They also maintain the structure of a cell's ribosomes-protein-making 'factories'. Unlike DNA, RNA can leave the cell's nucleus. See image 3. Its structure is similar to DNA except it has sugar ribose in place of deoxyribose and base uracil in place of thymine. During protein synthesis RNA molecules transfer genetic information from DNA molecules. They also maintain the structure of a cell's ribosomes-protein-making 'factories'. Unlike DNA, RNA can leave the cell's nucleus. See image 3. A nucleus of a cell contains chromosomes that carry genetic  information. Chromosomes are made from long, coiled molecules of  DNA. A gene is a shorter region of DNA that ca … rries the genetic  code for a particular characteristic. Darkwater Darkwater. Proteins are made up of amino acids and amino acids and there are over 20 types of amino acids. DNA only has 4 or sometimes 5 nucleotides. Therefore, the scientists believed t … hat since the body is so complex and that proteins can have a more advanced sequence, hereditary information was from proteins.
http://www2.le.ac.uk/departments/genetics/vgec/schoolscolleges/topics/dna-genes-chromosomes http://www.skwirk.com/p-c_s-4_u-88_t-175_c-560/dna-the-carrier-of-genetic-information/nsw/dna-the-carrier-of-genetic-information/code-of-life-genetics-/inheritance https://en.wikipedia.org/wiki/DNA https://genographic.nationalgeographic.com/science-behind/genetics-overview/ http://www.answers.com/Q/What_molecule_carries_genetic_information http://www.scasd.org/cms/lib5/PA01000006/Centricity/Domain/778/DNA%20Genes%20and%20Chromosome%20Quiz.doc http://www.bbc.co.uk/schools/gcsebitesize/science/aqa/geneticvariation/whyorganismsaredifferentrev1.shtml http://www.skwirk.com/p-c_s-4_u-88_t-175_c-560/dna-the-carrier-of-genetic-information/nsw/dna-the-carrier-of-genetic-information/code-of-life-genetics-/inheritance http://www.skwirk.com/p-c_s-4_u-88_t-175_c-560/dna-the-carrier-of-genetic-information/nsw/dna-the-carrier-of-genetic-information/code-of-life-genetics-/inheritance http://www.answers.com/Q/Dna_carries_hereditary_information_in
part of dna that carry hereditary information