Tag: dna fingerprinting

Questions Related to dna fingerprinting

Which takes place in DNA finger printing

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  1. Multiple restriction enzymes generate unique fragments

  2. Polymerase chain reaction amplifies fewer DNA

  3. Variability of repeated sequences between two restriction sites is evaluated

  4. A positive identification can be made

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Correct Option: C

Select the correct statements for DNA finger printing
i) It is ELISA based technique
(ii) It is PCR based technique
(iii) It is used by forensic scientists
(iv) It is based on finger prints of the individual
(v) It is a test for paternity.

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  1. i, ii, iii

  2. ii, iii, v

  3. i, iv, v

  4. i, iii, iv

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Correct Option: B

Arrange in a sequence the given protocol for DNA finger printing
(a) Denaturating DNA (b) Blotting (c) Extraction of DNA (d) Fragmenting DNA (e) Separation of DNA fragments by electrophoresis (f) Hybridisation with probe (g) Exposure on film to make a DNA finger print

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  1. c-d-e-a-b-f-g

  2. a-c-d-e- b -f-g

  3. a- c- b - d-e-f-g

  4. c-e-d-b-a-f-g

Show answer
Correct Option: A

Assertion:  DNA fingerprinting involves identifying differences in some specific regions in DNA sequence.

Reason:  In repetitive DNA sequences, a small stretch of DNA is repeated many times.

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  1. If both the assertion and the reason are true and the reason

    is a correct explanation of the assertion

  2. If both the assertion and reason are true but the reason is

    not a correct explanation of the assertion

  3. If the assertion is true but the reason is false

  4. If both the assertion and reason are false

  5. If the assertion is false but reason is true

Show answer
Correct Option: B

'DNA fingerprinting' has proved to be useful in forensic science. It involves the use of _______________.

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  1. Minisatellites

  2. Ribosomal RNA

  3. cDNA

  4. Bacterial DNA

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Correct Option: A

Which one of the following techniques is used for identifying a DNA sequence that binds to a particular protein and is based on the idea that the phosphodiester bonds in the region covered by the protein are protected from digestion by deoxyribonucleic?

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  1. Finger printing

  2. Foot printing

  3. RAPD

  4. FISH

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Correct Option: A

The technique of DNA finger printing was initially developed by 

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  1. lan wilmut

  2. Hargobind Khorana

  3. Jacque Monod

  4. Alec Jeffreys

  5. Francois Jacob

Show answer
Correct Option: D
Explanation:

DNA profiling is the process of determining an individual's DNA characteristics, which are as unique as fingerprints. The technique was developed in 1984 by British geneticist Alec Jeffreys. 

So, the correct option is D, 'Alec Jeffreys'.

Basis of DNA fingerprinting is

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  1. relative proportion of purines and pyrimidines

  2. relative difference in DNA occurrence in blood, skin and saliva

  3. relative amounts of DNA in ridges and groves of fingerprints

  4. satellite DNA occuring as highly short DNA segments.

Show answer
Correct Option: D
Explanation:

By cutting a sample of DNA into fragments and comparing it with other samples it's possible to work out if the DNA has come from the same person. This technique is called DNA fingerprinting, and is a technique used to help solve crimes where the suspect may have left a sample of body tissue at the crime scene. Satellite DNA consists of very large arrays of tandemly repeating, non-coding DNA. Satellite DNA is the main component of functional centromeres, and form the main structural constituent of heterochromatin. The term satellite is used to describe DNA sequences that comprise short head-to-tail tandem repeats incorporating specific motifs. So, the correct option is "Satellite DNA occurring as highly short DNA segments."

Which of the following is incorrect about DNA finger printing?

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  1. It is not inherited from parents to offspring

  2. Show high degree of polymorphism

  3. It is used to detect sex during fetal development

  4. It is used in medico-legal suits

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Correct Option: C

Biometry refers to

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  1. Identification of humans by scanning face and fingerprints

  2. Measurement of mechanical displacement in humans

  3. A method of lie detection

  4. Body length relationships across the evolutionary scale

Show answer
Correct Option: A
Explanation:

Biometric recognition (also known as biometrics) refers to the automated recognition of individuals based on their biological and behavioral traits. Examples of biometric traits include fingerprint, face, iris, palmprint, retina, hand geometry, voice, signature and gait.