DNA Report :: Biology

Many people have heard about this mysterious DNA molecule but don’t know much about it (what it is, where it’s located, what it does, etc.) In this report it will state the basics and investigate this mysterious molecule: deoxyribonucleic acid. DNA is a thin chainlike molecule found in almost every cell (Rubenstein, 2006), and is used in developing and functioning all known living organisms (â€Å"Wikipedia†, 2009). DNA is a Hereditary Material in a human body, (â€Å"U.S. National†, 2009), genomes determine hereditary (Rubenstein, 2006). The main goal for DNA is long-term storing of information (â€Å"Wikipedia†, 2009). Basically DNA is biological information exchanged from adult to child through reproduction (â€Å"National Human†, 2008). DNA is formed in the nucleus of a cell (â€Å"National Human†, 2008). Most DNA is found in the nucleus and a small amount is found in the Mitochondria. When DNA is found in the nucleus it is considered to be Nuclear DNA and when DNA is found in the Mitochondria it is considered Mitochondrial DNA (â€Å"U.S. National†, 2009). Humans always get 50% of DNA from your mom and 50% of DNA from your dad through reproduction; although only Mitochondrial DNA is from your mom because during fertilization egg cells only keep Mitochondria (â€Å"National Human† 2008). Sometimes DNA can be found in bacterial cells and in viruses (Rubenstein, 2006). DNA is made of many different resources found in a human body; chemicals, bases, and more. Deoxyribonucleic acid is made of three basic chemical building blocks; a Phosphate group, a Sugar group, and 1 of 4 nitrogen bases. DNA is made of 3 billon bases (National Human, 2008), 99% of these bases are the same in all humans (â€Å"U.S. National†, 2009), and the order and amount of the bases determines that humans unique self (Rubenstein, 2006). Bases are connected by hydrogen bonds, base pairing is very specific; Adenine only with Thymine and Cytosine only with Guanine (â€Å"Comptons†, 2008). Each DNA that contains instructions, that makes protein, is considered a gene; gene size varies from 1 thousand bases to 1 million bases (â€Å"National Human†, 2008). A gene carries genetic information during reproduction (â€Å"Wikipedia†,2009). DNA consists of thousands of chemical units called nucleotides (Rubenstein, 2006). Nucleotides are linked together by covalent bonds; linking phosphate of one to sugar of the next (â€Å"Comptons†, 2008). Like genes the exact amount and order of Nucleotides varies, making the person only themselves (Rubenstein, 2006).