MORE GENETIC TIPS 1.RNA was isolated from four different cell types and probed with labeled DNA strands from a cloned gene that is called gene X. The results are shown here. 2 3 Lane 1: Muscle cells Lane 2: Liver cells Lane 3: Spleen cells Lane 4: Nerve cells Explain the results of this experiment.

1 Question 33 Which of these genes would be on the bacterial chromosome, rather than on a plasmid? In other words, all of these genes are likely to be on a bacterial plasmid EXCEPT... Oa gene for degrading a certain environmental pollutant (e.g., oil). Oa gene for resistance to a certain antibiotic. O a gene for ATP synthase. Oa gene for making sex pili. stion 34

need correct answer

Homogenize cells Centrifuge Heat-kill Recover IIIS filtrate IIIS cells spun to bottom of tube Extract carbohydrates, lipids, and proteins IIIS cells in liquid culture medium Treat with ribonuclease Treat with Treat with deoxyribonuclease protease Assay for Transformation IIR cells IIR cells IIR cells IIR cells + IIIS filtrate DNase-treated RNase-treated IIIS filtrate Protease-treated IIIS filtrate IIIS filtrate No transformation Transformation Transformation Transformation occurs occurs occurs occurs IIR cells IIR cells IIR cells Only IIR cells + IIIS cells IIIS cells IIIS cells Conclusion: Active factor is DNA Conclusion: Active factor is not RNA Conclusion: Active factor is Control: IIIS contains not protein active factor E IIIS cells EA IIR cells 8. For each molecule listed, indicate whether they caused a transformation (Yes) or did not cause a transformation (No): a. RNA b. DNA c. Proteins yes d. Carbohydrate e. Lipids

genetics question  3. Explain how accurate direct-to-consumer test kits are for identifying BRCA1 and BRCA2 mutations?  If you had a positive result, how would you interpret this result and what steps might you take next?