Abstract: The invention concerns a size marker for electrophoresis, characterized in that it contains several pairs of molecules the sizes of which are selected to allow the generation of a succession of double-peaks in one same electropherogram, said double-peaks being spaced apart two by two by a distance greater than the distance separating the two peaks of a double-peak. The invention also concerns a method for controlling the resolution of an electropherogram produced with a said marker.

Abstract: The present invention relates to a PCR kit for improving detection of particular nucleic acid motifs and for increasing the reliability of the results obtained. More precisely, the invention proposes to use modified primers having particular characteristics making it possible, during electrophoresis treatment, to detect, on samples containing nucleic acids, the equivalent of a characteristic encoding of particular nucleic acid motifs, this encoding being such that it makes it possible to better detect the presence of these motifs. The invention also proposes a method for detecting nucleic acid motifs of interest (for example STRs, mini-STRs or VNTRs) using such primers. It advantageously finds—but is not limited to—application in the field of capillary electrophoresis.

Abstract: The invention concerns a size marker for electrophoresis, characterized in that it contains several pairs of molecules the sizes of which are selected to allow the generation of a succession of double-peaks in one same electropherogram, said double-peaks being spaced apart two by two by a distance greater than the distance separating the two peaks of a double-peak. The invention also concerns a method for controlling the resolution of an electropherogram produced with a said marker.