AF

-DNA makes new proteins that determie our traits -holds information to control every cell in our body -RNA-replication of DNA -DNA is made up of 4 different parts called nucleotides -3 millsion base pairs in each cell -3 billion base pairs are organized into 46 chromosomes or 23 pairs -23 from mother and 23 from father to make a complete pair of 46 -mother passes on x chromosome and father passes on the y -23rd determines female or male DNA fingerprinting- DNA probe will match the sample to the person -DNA probe is used to help solve crimes -a probe is a tiny piece of DNA, -a probe is a strain of DNA base pairs that will match up with your DNA PCR-Polymerase Chain Reaction -take short strains of DNA and copy -heat and separates into single strains, hydrogen bonds are broken -