GC skew - meaning and definition. What is GC skew
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What (who) is GC skew - definition


GC skew         
  • Richness of G over T in the leading strand, resulting in a GC skew sign at the origin and terminus.
  • Cumulative CG and AT skew for 49 bacterial chromosomes
GC skew is when the nucleotides guanine and cytosine are over- or under-abundant in a particular region of DNA or RNA. GC skew is also a statistical method for measuring strand-specific guanine overrepresentation.
Skew lines         
  • fibration]] of [[projective space]] by skew lines on nested [[hyperboloid]]s.
LINES IN 3D THAT DO NOT INTERSECT AND NEITHER DO THEY POINT THE SAME DIRECTION
Skew line; Skew straight lines; Skew flats; Distance between two skew lines; Nearest distance between skew lines
In three-dimensional geometry, skew lines are two lines that do not intersect and are not parallel. A simple example of a pair of skew lines is the pair of lines through opposite edges of a regular tetrahedron.
Clock skew         
  • Figure 1. The perils of zero skew.  The FF2 -> FF3 path will malfunction with a hold violation if a small amount of extra clock delay to FF3, such as clock jitter, occurs.
  • Figure 2. A small amount of delay inserted at the clock input of FF2 guards against a hold violation in the FF2 -> FF3 path, and at the same time allows the FF1 -> FF2 path to operate at a lower clock period.  This intentional skew circuit is both safer and faster than the zero skew circuit of Figure 1.
PHENOMENON OF A SYNCHRONOUS DIGITAL CIRCUIT'S CLOCK SIGNAL ARRIVING OVER MULTIPLE PATHS AT DIFFERENT TIMES
Timing skew; Clock shear
Clock skew (sometimes called timing skew) is a phenomenon in synchronous digital circuit systems (such as computer systems) in which the same sourced clock signal arrives at different components at different times due to gate or, in more advanced semiconductor technology, wire signal propagation delay. The instantaneous difference between the readings of any two clocks is called their skew.