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NEETZoologyMolecular Basis of Inheritance

What is the classification of satellite DNA based on?

Options

  1. ARepetitive unit length
  2. BBase composition
  3. CBoth a and b
  4. DGene function

Correct answer

C. Both a and b

Step-by-step solution

DNA fingerprinting involves identifying differences in some specific regions in DNA sequence called repetitive DNA, because in these sequences, a small stretch of DNA is repeated many times. These repetitive DNA are separated from bulk genomic DNA as different peaks during density gradient centrifugation. The bulk DNA forms a major peak and the other small peaks are referred to as satellite DNA. Depending on base composition (A : T rich or G:C rich), length of segment, and number of repetitive units, the satellite

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