Satellite DNA - Types of Satellite DNA

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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