Figure 1

Minisatellite repeat units are characterized by an approximate 16 bp core sequence in humans and other animals. (A) A core minisatellite repeat is present at three loci. (B) The number of minisatellite repeats at these loci are shown for one individual (the mother) who is heterozygous at each of the three loci. Locus 1 genotype: 5, 2; locus 2 genotype: 7, 3; and locus 3 genotype: 8, 1. (C) Representation of an autoradiograph showing restriction fragment profiles of four individuals at these three loci. At each locus in the child’s profile, one allele is shared with the mother and the other is shared with the father, as would be expected when maternity and paternity have been correctly identified. Note that the unrelated individual shares only a small number of bands with the individuals from this family.