Repeat-number variation among microsatellite alleles
The microsatellite motif CA is
repeated between 3 & 7 times in the alleles shown. A
microsatellite locus often comprises several hundred motif
repeats, such that dozens of alleles are possible.
Figure © 2012 TA Brown, Introduction to Genetics (1st ed.); additional text © 2012 by Steven M. Carr