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प्रश्न
Explain the significance of satellite DNA in DNA fingerprinting technique.
उत्तर
Satellite DNA are small non-coding but inheritable sequences of bases which can be separated as satellite from bulk DNA during density gradient centrifugation. Satellite DNA shows polymorphism which forms the basis of DNA fingerprinting. There are short nucleotide repeats in the DNA which are specific in each individual and vary in number from person to person but are not inherited. These are called ‘variable number tandem repeats’ or mini-satellites. Individuals inherit these repeats from their parents which are used as genetic markers in a personal identity test.
संबंधित प्रश्न
The genetic marker used as key factor in DNA fingerprinting is _______.
(A) VNTRs
(B) Exons
(C) Introns
(D) DNA probes
Which material is used for isolation of DNA in fingerprinting technique?
Long Answer Question:
Guess (i) the possible location of DNA on the collected evidence from a crime scene and (ii) the possible sources of DNA.
| Evidence | Possible location of DNA on the evidence | Sources of DNA |
| e.g. Eyeglasses | e.g. Ear pieces | e.g. Sweat, Skin |
| Bottle, Can, Glass | Sides, mouthpiece | __________ |
| __________ | Handle | Sweat, skin, blood |
| Used cigarette | Cigarette butt | ____________ |
| Bite mark | ____________ | Saliva |
| __________ | Surface area | Hair, semen, sweet, urine |
Similar DNA fingerprinting is obtained for______.
In DNA fingerprinting technique, which of the following probe is used for hybridization of DNA fragments?
Which of the following technique is used for amplification or multiplication of DNA for fingerprinting?
____________ are the DNA sequences which are useful in DNA fingerprinting.
Which of the following is the technique developed to identify a person with the help of DNA restriction analysis?
____________ paper is used for embedding DNA strands in Southern blotting technique.
Polymorphism arises due to ______
