Types of Satellite DNA
Satellite DNA, together with minisatellite and microsatellite DNA, constitute the tandem repeats.
Some types of satellite DNA in humans are:
| Type | Size of repeat unit (bp) | Location |
|---|---|---|
| α (alphoid DNA) | 171 | All chromosomes |
| β | 68 | Centromeres of chromosomes 1, 9, 13, 14, 15, 21, 22 and Y |
| Satellite 1 | 25-48 | Centromeres and other regions in heterochromatin of most chromosomes |
| Satellite 2 | 5 | Most chromosomes |
| Satellite 3 | 5 | Most chromosomes |
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