DNA or Deoxyribonucleic acid is in every living thing. DNA has four characteristics including being a double helix, having a sugar and phosphate backbone, its made of 4 nitrogenous bases (A,C,G,T) the bases pair complimentary (A-T,C-G) . The four bases are adenine, thymine, guanine and cytosine. DNA is unique to each organism. If the DNA of an organism changes the organism its self will change. This is how we can explain evolution. If evolution is the change in a population. That means that the DNA must be changing.
Definition
noun
A double-stranded nucleic acid that contains the genetic information for cell growth, division, and function.
Supplement
Structure: DNA is composed of two strands that twist together to form a helix. Each strand consists of alternating phosphate (PO4) and pentose sugar (2-deoxyribose), and attached on the sugar is a nitrogenous base, which can be adenine, thymine, guanine, or cytosine. In DNA, these bases pair; adenine pairs withthymine and guanine with cytosine. Hence, DNA is a ladder-like helical structure.
Location: DNA is found in the cytoplasm of prokaryotic cells, and chiefly in the nucleus of eukaryotic cells. A small fraction of total DNA is present in mitochondria andchloroplasts.
Function: DNA is a long polymer of nucleotides to code for the sequence of amino acid during protein synthesis. DNA is said to carry the genetic ‘blueprint’ since it contains the instructions or information (called genes) needed to construct cellular components like proteins and RNA molecules.
noun
A double-stranded nucleic acid that contains the genetic information for cell growth, division, and function.
Supplement
Structure: DNA is composed of two strands that twist together to form a helix. Each strand consists of alternating phosphate (PO4) and pentose sugar (2-deoxyribose), and attached on the sugar is a nitrogenous base, which can be adenine, thymine, guanine, or cytosine. In DNA, these bases pair; adenine pairs withthymine and guanine with cytosine. Hence, DNA is a ladder-like helical structure.
Location: DNA is found in the cytoplasm of prokaryotic cells, and chiefly in the nucleus of eukaryotic cells. A small fraction of total DNA is present in mitochondria andchloroplasts.
Function: DNA is a long polymer of nucleotides to code for the sequence of amino acid during protein synthesis. DNA is said to carry the genetic ‘blueprint’ since it contains the instructions or information (called genes) needed to construct cellular components like proteins and RNA molecules.