1. Additional info: Genes & DNA

2. I. DNA A. Nucleotides: The subunits of DNA
Deoxyribonucleic acid= DNA: is the code for proteins that our bodies make that give us every characteristic that makes us
DNA is made up of smaller units called nucleotides
Consists of a nitrogenous base pair and a sugar phosphate group

3. Nitrogenous base pairs
Adenine Thymine
Cytosine Guanine

4. B. Contributors to discovering DNA
Rosalind Franklin= used x-ray images to help see the structure of DNA

5. Francis Watson and James Crick= using Franklin’s x-ray images came up with the idea that the DNA molecule is a double helix shape

6. C. Making copies
DNA must replicate (make copies) to keep making new cells
The inside of the double helix “unzips” (hydrogen) bonds break and the base pairs will reattach to new partners creating another identical strand
C ALWAYS pairs with G
A ALWAYS pairs with T