Question

Differentiate between the following:

Repetitive DNA and Satellite DNA

Differentiate between repetitive and satellite DNA.

Answer 1

Sr. No.	Repetitive DNA	Satellite DNA
1.	It is the section of DNA that contains the same base sequences repeated numerous times. The repeating sequences in this repetitive DNA might be tandem or interspersed repeatedly.	The portion of repetitive DNA contains repeated sequences in tandem, also known as tandemly repetitive DNA.
2.	Repeating units can be a few base pairs long or hundreds to thousands of base pairs long.	It has small sequence repetitions (up to 60 bp long).
3.	They appear as bright bands in the CsCl density gradient study.	In CsCl density gradient analysis, it is seen as small dark bands.
4.	During density gradient centrifugation, repetitive DNAs are isolated from bulk genome DNA by distinct peaks.	It is separated from repetitive DNA as a satellite. Satellite DNA has been divided into small peaks.