In automated DNA sequencing reaction by the Sanger method, which
of the following is NOT required?
fluorescently-labeled dideoxynucleotides
deoxynucleotides
DNA polymerase
a DNA primer
none of the above (i.e. all the above are required in the
reaction)
Sanger sequencing uses dideoxyribonucleotides because
a)They prevent the incorporation of subsequent DNA
nucleotides
b)DNA polymerase will not utilize them during replication
c)They work more efficiently at high temperatures
question2
Which of the following is a palindromic sequence capable of
being recognized by a restriction enzyme?
Group of answer choices
a)5’- ATGGTA -3’
b.5’- GCTAGC -3’
c.5’- CGCGAG -3’
d.5’- TACGAT -3’
question 3
What is the main difference between benign and malignant
tumors?
Group of answer choices
a.Benign tumors can...
The DNA polymerases used over many years for Sanger
dideoxynucleotide termination sequencing of DNA have had one common
feature: they all were intentionally chosen to lack 3’à 5’
exonuclease activity, the proofreading function that many DNA
polymerases carry to maintain high fidelity. Why would having
proofreading exonuclease activity within the polymerase be
detrimental to the Sanger sequencing technique? If you were to
substitute a polymerase with proofreading capability, how might
that affect the distribution of the bands of DNA produced...
Why does nextgen sequencing work more effectively than Sanger
sequencing when working with ancient DNA samples? What features of
sequences can be used to separate sequences generated from ancient
samples vs modern contaminants?
sanger sequencing, and how base identity (A,T,C,G) is
detected using fluorescence. Can you explain what it means that the
DNA is labeled with a fluorescent tag, and where that tag is
located?
: Sanger sequencing is the method of dideoxy
sequencing that we use in Bio 2450. It is a modified PCR reaction
that has the dNTPS replaced with a mixture of dNTPs:ddNTPs. In this
section, go into detail on how the addition of ddNTP alters the
produced PCR fragments and describe how we ultimately get the
sequence.