Can you please check my answer and see if it is correct.    Question: In addition to master mix, what else must be added to each PCR tube? Why?    Answer: In addition to master mix, the primers must be added to the PCR tubes. Each tube is also reserved for one individual’s specific section of DNA. So not only do primers needed to be added that are made specifically for the person’s DNA, but the DNA itself from the suspect needs to be added to the PCR tubes (DNA template strand). We also must have a control which contains sterile water, and one PCR tube reserved for DNA from the crime scene.

In DNA isolation techniques, a washing step is always done prior to the final resuspension. What is the purpose of this step? In DNA isolation from blood samples, why does the vial for blood storage contain EDTA? In the preparation for DNA isolation in plants, the plant source is refrigerated and ground prior to extraction. Why is this so? Why are DNA pellets air-dried before resuspension in buffer?

You need to complete the following steps for an experiment. Explain whether an acrylamide gel or an agarose gel is more appropriate to use for the following experiments. Purifying tRNA from total RNA Isolating a vector insert for cloning Analyzing PCR products

A linear DNA fragment was produced by digestion with the restriction enzyme, Xba1. This fragment with XbaI(X) sites on both ends was then further digested with HindIII (H) and EcoRI (E).  Draw a restriction map of the linear fragment based on the gel electrophoresis results shown below.  X         H         Marker             E          H/E                           __2000bp __                    __1500b                         __1300bp        __             __        __1000bp                    __                         __700bp             ­­__        __500bp                         __400bp                         __300bp                      __                         __200bp          __        __                         __100bp

The gel below shows results for the bitter tasting SNP analysis from a CH306 class from a few years ago. Analyze the results and annotate the gel to indicate the bitter tasting ability and homozygous/heterozygous status of each of the individuals represented on the gel. There are three lanes of markers, and the first non-maker lane on the left of the gel is an uncut control PCR product (i.e. there are a total of 10 individuals on the gel starting in lane 3).

The following statements are either accurate as written or contain some errors. You need to rewrite each as an accurate statement. Make sure that you do not change the material the sentence is about. Highlight or underline any changes that you make to statements. Thank you! 1. Primers cleave DNA at recognition sequences. They can produce either matching ends, which are fragments with overhangs, or it can produce blunt ends, which are fragments without overhanging ends.  2. Codons are three nonoverlapping (such that each ribonucleotide is only in one codon) ribonucleotides that specify a particular amino acid. They are "read" in a linear fashion by the ribosome to be translated into a polypeptide.  3. The diagram below is an illustration of an important molecule for transcription. It depicts a ribosome that has two important regions. Region A that attaches to an amino acid and Region B that contains a codon.