Day 6 - (Bacterial Genetics Lab) The students pick colonies from a plate of both prototrophic and auxotrophic bacteria Day 6 - (Bacterial Genetics Lab) The students plate lac+ and lac- bacteria on MacConkey's media Day 6 - (Bacterial Genetics Lab) The students use sterile loops to make designs on their MacConkey's media plates Day 6 - (Bacterial Genetics Lab) The students use toothpicks to add fifty different colonies to their nutrient agar plates Day 6 - (DNA Fingerprinting Lab) The students extract the DNA from their cheek cells Day 6 - (DNA Fingerprinting Lab) The students scrape the inside of their cheeks to collect cells for the PCR reaction Day 6 - (Glowing Bacteria Lab) Sara explains the principles of plasmid DNA and genetic engineering Day 6 - (Glowing Bacteria Lab) The students add bacteria to their tubes of calcium chloride Day 6 - (Glowing Bacteria Lab) The students add room temperature Luria broth to their tubes Day 6 - (Glowing Bacteria Lab) The students incubate their tubes after adding the luciferase-containing plasmid Day 6 - (Glowing Bacteria Lab) The students use heat shock to allow the plasmid to enter the bacterial cells Day 6 - (Karyotyping Assignment) The students complete a human karyotype to identify chromosomal mutations