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Talk:Satellite DNA

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Why do we call the repetitive DNA as "Satellite DNA"?

If I recall correctly, it's for historical reasons. In the early days, when they did differential centrifugation of DNA it got separated in a different layer from the rest. Hence, satellite DNA.

What does "Satellite" mean exactly in this?

I never thought about microsatellites as repeat sequences. they're usually in the untranscribed section of dna, short (2-10bp) and serve as markers. ribosome slippage in huntington's disease, for example, isn't a microsatellite as far as i know, i thought it was a STR. —Preceding unsigned comment added by Mkayatta (talk • contribs) 14:21, 2 November 2007 (UTC)[reply]

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