AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

CLONING GENES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is needed for both the Sanger method and Pyrosequencing?
A
labelled nucleotides
B
single stranded DNA
C
bases that terminate the chain
D
ATP sulfurylase
Explanation: 

Detailed explanation-1: -Sanger sequencing requires a DNA template, a sequencing primer, a thermostable DNA polymerase, nucleotides (dNTPs), dideoxynucleotides (ddNTPs), and buffer. Thermal cycling in the sequencing reactions amplifies extension products that are terminated by one of the four ddNTPs.

Detailed explanation-2: -To run a Sanger sequencing reaction you need template DNA, a single stranded DNA primer to get the reaction started, DNA polymerase, and nucleotides (G’s, C’s, A’s, and T’s).

Detailed explanation-3: -Pyrosequencing requires a single-stranded PCR amplicon that serves as DNA template, four different enzymes including DNA polymerase, ATP sulfurylase, luciferase, and apyrase, and two different substrates including adenosine 5′ phosphosulfate (APS) and luciferin [13].

Detailed explanation-4: -Pyrosequencing is a method of DNA sequencing that differs from Sanger sequencing, in that it relies on the detection of pyrophosphate release and the generation of light on nucleotide incorporation, rather than chain termination with dideoxynucleotides.

There is 1 question to complete.