DNA DNA
Genes are made up of DNA. Each chromosome contains many genes. A gene is the basic physical and functional unit of heredity. Genes, which are made up of DNA, act as instructions to make molecules called proteins. In humans, genes vary in size from a few hundred DNA bases to more than 2 million bases.  Confidence votes 24.5K. DNA is a very large molecule, made up of smaller units called nucleotides that are strung together in a row, making a DNA molecule thousands of times longer than it is wide. Each nucleotide has three parts: a sugar molecule, a phosphate molecule, and a structure called a nitrogenous base. The nitrogenous base is the part of the nucleotide that carries genetic information, so the words nucleotide and base are often used interchangeably. The bases found in DNA come in four varieties: adenine, cytosine, guanine, and thymineoften abbreviated as A, C, G, and T, the letters of the genetic alphabet. DNA is a very large molecule, made up of smaller units called nucleotides that are strung together in a row, making a DNA molecule thousands of times longer than it is wide. Each nucleotide has three parts: a sugar molecule, a phosphate molecule, and a structure called a nitrogenous base. The nitrogenous base is the part of the nucleotide that carries genetic information, so the words nucleotide and base are often used interchangeably. The bases found in DNA come in four varieties: adenine, cytosine, guanine, and thymineoften abbreviated as A, C, G, and T, the letters of the genetic alphabet 1 The instructions in our genome are made up of DNA. 2  Within DNA is a unique chemical code that guides our growth, development and health. 3  This code is determined by the order of the four nucleotide bases that make up DNA, adenine, cytosine, guanine and thymine, A, C, G and T for short. Each genome contains all of the information needed to build that organism and allow it to grow and develop. Our bodies are made up of millions of cells (100,000,000,000,000), each with their own complete set of instructions for making us, like a recipe book for the body. Hide summary. Genomes are composed of DNA, and a knowledge of the structure of DNA is essential to... Genomes are composed of DNA, and a knowledge of the structure of DNA is essential to understand how it can function as hereditary material. Introduction. Genomes are composed of DNA, and a knowledge of the structure of DNA is essential to understand how it can function as hereditary material. DNA 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. DNA. DNA is the molecule that is the hereditary material in all living cells. Genes are made of DNA, and so is the genome itself. A gene consists of enough DNA to code for one protein, and a genome is simply the sum total of an organism's DNA. DNA is long and skinny, capable of contorting like a circus performer when it winds into chromosomes. Each nucleotide has three parts: a sugar molecule, a phosphate molecule, and a structure called a nitrogenous base. The nitrogenous base is the part of the nucleotide that carries genetic information, so the words nucleotide and base are often used interchangeably. 1 Your genome is made of a chemical called deoxyribonucleic acid, or DNA for short. 2  DNA contains four basic building blocks or ‘ bases ’: adenine (A), cytosine (C), guanine (G) and thymine (T). 3  The order, or sequence, of these bases form the instructions in the genome. 4  DNA is a two-stranded molecule. 1 DNA contains four basic building blocks or ‘ bases ’: adenine (A), cytosine (C), guanine (G) and thymine (T). 2  The order, or sequence, of these bases form the instructions in the genome. 3  DNA is a two-stranded molecule.
http://ghr.nlm.nih.gov/handbook/basics/gene http://www.answers.com/Q/What_is_DNA_made_of http://www.genomenewsnetwork.org/resources/whats_a_genome/Chp1_4_1.shtml http://www.yourgenome.org/facts/what-is-a-genome http://www.open.edu/openlearn/science-maths-technology/science/biology/what-the-genome-made/content-section-0 http://www.livescience.com/37247-dna.html http://www.genomenewsnetwork.org/resources/whats_a_genome/Chp1_4_1.shtml http://www.yourgenome.org/facts/what-is-dna
what is genome made of