Question

What is it that forms the basis of DNA fingerprinting?

• A. The relative amount of DNA in the ridges and grooves of the fingerprints.
• B. The relative proportions of purines and pyrimidines in DNA.
• C. The relative difference in the DNA occurrence in blood, skin and saliva.
• D. Satellite DNA occurring as highly repeated short DNA segments.

Answer 1

The correct option is D

Satellite DNA occurring as highly repeated short DNA segments.

DNA fingerprinting involves identifying differences in some specific regions in the DNA sequence called as repetitive DNA.

Repetitive DNA is separated from bulk DNA. The bulk DNA forms a major peak and other small peaks are referred as satellite DNA. Satellite DNA occurs as highly repeated short DNA segments.