Additional info: Genes & DNA https://youtu.be/uXdzuz5Q-hs

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

Nitrogenous base pairs Adenine ----- Thymine Cytosine ------ Guanine

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

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

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