Genetics - DNA

What is DNA?

  • The actual instructions inside the chromosome is stored in a long molecule called DNA. DNA stands for deoxyribonucleic acid.

Structure of DNA

  • DNA is a long thin molecule made up of something called nucleotides. There are four different types of nucleotides: adenine, thymine, cytosine, and guanine. They are usually represented by their first letter: A- adenine T- thymine C – cytosine G - guanine
  • Holding the nucleotides together is a backbone made of phosphate and deoxyribose. The nucleotides are sometimes referred to as “bases”.

The DNA Code

  • The DNA code is held by the different ....

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