Question

three scientists are using different forms of pcr for their research. abby wants to determine changes in gene expression levels in a tissue, so she uses ____. bob is trying to extract genetic information from a wooly mammoth fossil, so he uses __. chris needs to express a gene in bacteria that matches the form expressed in kidney cells, so she uses ____. multiple choice rt - pcr, pcr, quantitative rt - pcr rt - pcr, quantitative rt - pcr, pcr pcr, quantitative rt - pcr, rt - pcr quantitative rt - pcr, pcr, rt - pcr quantitative rt - pcr, rt - pcr, pcr

Explanation:

Quantitative RT - PCR is used to measure gene - expression levels, so Abby uses quantitative RT - PCR. PCR is used to amplify DNA from a sample like a wooly mammoth fossil, so Bob uses PCR. RT - PCR is used to express a gene in bacteria as it converts RNA to DNA which can then be manipulated in bacteria, so Chris uses RT - PCR.

Answer:

D. quantitative RT - PCR, PCR, RT - PCR