@ Dr. Heinz Lycklama
Evolution of Complex Organs
nThe Origin of Species
Chapter VI "Difficulties
of the Theory"
nOrgans of Extreme Perfection
and Complication
n“To suppose that the eye with all its inimitable contrivances for adjusting the focus to different distances, for admitting different amounts of light, and for the correcting of spherical and chromatic aberration, could have been formed by natural selection, seems, I freely confess, absurd in the highest degree.”
There are at least 10 types of human satellite DNA.  Typically they make up 10 - 15 % of  mammals genomes.  It is satelite DNA that is used in one type of DNA finger printing.

Short Interspersed Elements (SINEs) - These approximately 300 bp units of DNA  are found distributed throughout the genome.  An example is the human  Alu sequence which occurs about 500,000 times making up 5 % of the genome in the human genome.  One of the interesting properties of SINEs is that they  may move about in the genome.

Long Interspersed Elements (LINEs) - are longer than SINEs (up to 7,000 bp).  There are approximately 50,000 copies of the most common LINE family, L1, so this group makes up 5 % of the human genome.