1. DNA

2. What is DNA? Deoxyribonucleic acid Genetic material
Determines inherited traits
Located in the nucleus of eukaryotes
Still in prokaryotes even though they don’t have a nucleus

3. What does DNA look like? Double helix shape (twisted ladder)
DNA has three main parts: sugar, phosphate, and a base
The three parts together are called a nucleotide

6. DNA Bases There are 4 bases: DNA will pair up (base pair) Adenine
Thymine
Cytosine
Guanine
DNA will pair up (base pair)
Adenine and Thymine pair up
Cytosine and Guanine pair up

7. How are copies of DNA made?
DNA splits in half
Each base pair will get a new match
P. 332

8. What are mutations? A change in DNA 3 types
Deletion: a base is left out
Insertion: a base is added
Substitution: a base replaces another
Sometimes proteins can work to fix the mistake; if not, it becomes part of the genetic code
Answer questions on p. 333