What is expected theoretical number of copies of DNA molecules after 28 cycles in a PCR experiment? What is the percent efficiency of the PCR experiment if the actual number of copies was 500,000,000? Show your calculations

What is expected theoretical number of copies of DNA molecules after 28 cycles in a PCR experiment? What is the percent efficiency of the PCR experiment if the actual number of copies was 500,000,000? Show your calculations

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter10: Biotechnology

Section: Chapter Questions

Problem 10SQ

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You learned in the chapter that an STR locus is a locus where alleles differ in the number of copies of a short, tandemly repeated DNA sequence. PCR is used to determine the number of alleles present, as shown by the size of the DNA fragment amplified. In the Figure below are the results of PCR analysis for STR alleles at a locus where the repeat unit length is 9 bp, and alleles are known that have 5 to 11 copies of the repeat. Given the STR alleles present in the adults, state whether each of the four juveniles could or could not be an off-spring of those two adults. Explain your answers.
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. In the PCR process, if we assume that each cycle takes5 minutes, how manyfold amplification would be accomplished in 1 hour?
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You are working in a molecular biology laboratory and are having challenges with your PCR. You decide to double-check the PCR protocol programmed into the thermal cycler and discover that the annealing temperature was programmed to be 65 °C instead of 50 °C, as you had intended. What effects would this mistake have on the PCR reaction? Suggest potential solution(s).
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The temperature at which the primers and target DNA hybridize may be changed to influence the stringency of PCR amplification. What effect will changing the hybridization temperature have on the amplification? Let's say you have a certain yeast gene A and want to check whether it has a human equivalent. How might managing the hybridization's rigor benefit you?
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