What causes split peaks in an electropherogram?

What causes split peaks in an electropherogram?

Split peaks are due to the main peak being split into two peaks caused by the Taq polymerase activity that causes the addition of a single “A” to the terminus of the amplified product (“N+1” band).

What does an electropherogram show?

An electropherogram is a plot of results from an analysis done by electrophoresis automatic sequencing. An electropherogram shows a sequence of data that is produced by an automated DNA sequencing machine. Electropherograms may be used for deriving results from: genealogical DNA testing.

What do color and height of an electropherogram peaks represent?

A typical electropherogram from a single PCR product is shown below. Each peak represents a single nucleotide in the DNA sequence, and each nucleotide has a different colour; A is green, T is red, C is blue and G is black.

How many loci are represented in this electropherogram?

An electropherogram from an individual, showing the alleles at four STR loci: D8S1179, D21S11, D7S820, and CSF1PO. Each locus shows the alleles below it as peaks in the electropherogram.

What is the difference between electropherogram and chromatogram?

a chromatogram is the depiction of the elution of material from a chromatographic method. an electropherogram is a chromatogram where the source of data is electrophoresis (such as a gel scan; it is especially important when you don’t have a gel to look at, like with capillary electrophoresis).

What is the difference between chromatogram and electropherogram?

When reading an electropherogram What does each peak represent?

(Note that in a real electropherogram, guanine would be represented by yellow, rather than black.) Each line represents one of the four nucleotides, and the peaks in the lines indicate the strength of the signal given off from the laser beam as it hits the DNA fragment.

What is an electropherogram what is a consensus sequence and how is this different from an electropherogram?

An electropherogram is a graphical representation of data received from a sequencing machine and yields one read. A consensus is a sequence that has been generated from the alignment of multiple reads; it is an actual sequence of letters, as opposed to a graphic image.