7. Every cycle of a PCR reaction results in a __________________ increase in the amount of DNA, so after 20 cycles, the amount of DNA will have increased approximately __________________.
7. Every cycle of a PCR reaction results in a two fold increase in the amount of DNA, so after 20 cycles, the amount of DNA will have increased approximately to one million copies.
Explanation :
7. Every cycle of a PCR reaction results in a __________________ increase in the amount of...
Today we amplified 50 ng of Bos taurus (calf) DNA by PCR. This amount of DNA contains about 15,000 molecules of the insulin gene [50 ng DNA= 2.5 x 10-20mol; (2.5x10-20)x(6.023×1023) = 1.5 x 104molecules]. We performed PCR for 35 cycles to amplify the amount of this gene. a. What is the theoretical fold amount of DNA amplified by 35 cycles of PCR (remember the 2Nformula)? b. How many molecules of the insulin gene would, therefore, be present after PCR?
You are interested in cloning a gene from the B. sanfranciscus genome, so you design PCR primers that should amplify a 1 kilobase pair (kbp) PCR product that contains the gene of interest. After amplification, you will see if the PCR was successful by loading the entire reaction onto an agarose gel and performing electrophoresis to see if a product of the expected size was generated. To visualize the DNA, you will stain the gel with a fluorescent dye called ethidium bromide, which...
1.The PCR (polymerase chain reaction) protocol that is currently used in laboratories was facilitated by the discovery of a bacterium called Thermus aquaticus in a hot spring inside Yellowstone National Park, in Wyoming. This organism contains a heat-stable form of DNA polymerase known as Taq polymerase, which continues to function even after it has been heated to 95°C. a.Why would such a heat-stable polymerase be beneficial in PCR? b.What would happen if it weren’t heat stable? c.How might you choose...
7. List the components (ingredients) required for a PCR reaction. 8. List the three main steps of a PCR reaction in order, from start to finish, of one eyele. 9. In addition to the components required for PCR, what is additionally required for Sanger sequencing, and why (what does it do)? | 10. Approximately how 'big' was the piece of DNA that we amplified? 11. Our DNA samples were quantified using a fluorometer. When we received the quantification results, what...
• 4. How many copies of the primers do you add to the PCR? You add 3 pl. of a 5 M solution of each primer, If you had 100 copies of the template DNA would there be enough primers to support 30 cycles of PCR? Remember the amount of template doubles (in theory) with each cycle. After 1 cycle there will be 2xthe starting amount, after 2 cycles 4 x the starting amount.
A PCR reaction begins with 5 double stranded segment(s) of DNA. Part A: Estimate the number of double-stranded copies of DNA that are present after the completion of 15 amplification cycles? Part B: After 30 cycles?
1. Explain why, when PCR is used to amplify the same region of DNA from two different people, the size of the DNA fragment(s) generated may be different? 2. What characteristic of the DNA molecule makes it possible to use electrophoresis to separate DNA molecules by size? Explain why this characteristic is important for electrophoresis and what part of the DNA molecule creates this characteristic. 3. You are performing PCR. After four cycles of PCR, how many double-stranded copies of...
Suppose you start a PCR reaction with 3 copies of a double stranded DNA fragment. How many copies will be present after 4 replication cycles? a. 7 b. 64 c. 48 d. 24 e. 8
Carolina Savirana Craz 3/12/20 GECC-Polymerase Chain Reaction 1. What is the purpose of the polymerase chain reaction? a. To repair damaged DNA b. To make copies of entire chromosomes c. To make copies of specific regions of DNA d. To prepare cells for cell division 2. The polymerase chain reaction is most comparable to what cellular process? a. Mitosis b. Replication c. Transcription d. Translation 3. When enzymes are elongating (building) a newly synthesized DNA strand in PCR, new nucleotides...
1. What are the degenerate primers in the PCR amplification protocol? What do they do? 2. Suppose you begin a PCR reaction with 1 piece of double stranded DNA. After 30 cycles of replication, how many pieces of double stranded DNA do you now have? 3. What would be the consequence of having too much DNA in the sample? Would it interfere with the PCR reaction? Why? 4. What happens during the annealing step of the PCR reaction? During the...