Tag: dna fingerprinting

Questions Related to dna fingerprinting

Matching DNA sequence of criminal with suspect is known as

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  1. DNA finger printing

  2. DNA amplification

  3. Gene mapping

  4. DNA resolution

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Correct Option: A
Explanation:

DNA amplification is the synthesis of multiple copies of small DNA sample which is done by PCR technique. It amplifies the gene of interest in three steps namely denaturation of target DNA (thermal cycle to separate the DNA strands), annealing of primers to the ssDNA and polymerization (extension of primer into complete DNA strand complementary to the template strand). 

Gene mapping is identifying the location of different genes on a chromosome. It is done using recombination frequency (which does not correspond to physical distance) or using RFLPs that generate physical maps. 
The DNA polymorphism in simple-sequence DNA and VNTRs has revealed during DNA finger printing in the identification of suspect since it is very remote possibility to have two individuals same repeats of satellite DNA throughout the genome except they share a biological relationship. This is because a child gets half DNA from father and half from the mother. Restriction enzymes of genome produce the restriction fragments length polymorphisms, or RFLPs depending on the location of restriction sites which are then sorted by gel electrophoresis followed by southern blotting. The blots of the suspect and of the sample from the crime scene are compared for sequence homology using radioactive probes; option A is the correct answer.

Which of the following can result in inaccurate test results in DNA fingerprinting?

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  1. Sample size

  2. Tissue decay

  3. Blood transfussion

  4. All of the above

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Correct Option: D
Explanation:

The possibility of having inaccurate test results increases if a very small sample of DNA is available for testing. The chance that the DNA will be mixed up with some other DNA is also higher with a smaller sample. If a person had a blood transfusion within the past 3 months which make the availability of DNA sample of different types. The decay of the tissue sample can also lead to inaccurate results. Therefore, the correct answer is option D.

What is meant by DNA fingerprinting ?

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  1. Techniques used for molecular analysis of different specimens of RNA

  2. Techniques used for identification of fingerprints of individuals

  3. Molecular analysis of profiles of DNA samples

  4. Analysis of DNA samples using imprinting devices

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Correct Option: C
Explanation:

DNA finger printing is a technique employed by forensic scientists to assist in the identification of individuals by their respective DNA profiles. This method was developed by Alec Jeffrey.

Which one of the following pairs of terms/names mean one and the same thing?

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  1. Gene pool - Genome

  2. Codon - Gene

  3. Cistron - Triplet

  4. DNA fingerprinting - DNA profiling

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Correct Option: D
Explanation:

DNA profiling or fingerprinting is a technique employed by forensic scientists to assist in the identification of individuals by their respective DNA profiles.

Who developed DNA finger printing technique ?

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  1. Jeffreys, Wilson and Thien

  2. Boysen and Jensen

  3. Schleiden and Schwann

  4. Edward and Steptoe

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Correct Option: A
Explanation:

DNA fingerprinting technique was invented by Alec Jeffrey, Wilson and Thien.

Father of DNA finger printing is

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  1. Sunder Lai Bahugana

  2. Wishwanath

  3. Jeffreys

  4. Rockfeller

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Correct Option: C

Dermatoglyphics is connected with

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  1. Skin diseases

  2. Care of skin

  3. Cosmetics

  4. Finger printing

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Correct Option: D

VNTR is employed for

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  1. Protoplasmic culture

  2. DNA finger printing

  3. Regulation of plant growth hormones

  4. Enhancing photosynthesis in desert plant

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Correct Option: B

Best method to determine paternity is

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  1. Protein analysis

  2. Chromosome counting

  3. Gene counting

  4. DNA finger printing

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Correct Option: D

DNA finger printing is related to

zoology genetics of the future hgp and dna fingerprinting dna fingerprinting human genome project and dna fingerprinting

  1. Molecular analysis of profiles of DNA samples

  2. Analysis of DNA samples using imprinting devices

  3. Techniques used for molecular analysis of different specimens of DNA

  4. Techniques used in identification of finger prints of different persons

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Correct Option: A