Biology · Law Legal Studies

Forensic Science Techniques

725 Questions

Forensic science techniques involve the application of scientific methods like DNA fingerprinting, biometrics, and trace evidence analysis to solve crimes. These topics appear in specialized law enforcement and general science exams. Practice these questions to understand forensic fundamentals.

DNA fingerprinting methodsTrace evidence transferBiometrics and identificationForensic pathology

Forensic Science Techniques Questions

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

What is meant by DNA fingerprinting ?

  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
Reveal answer Fill a bubble to check yourself
C Correct answer
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.

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

DNA finger printing is related to

  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
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

DNA fingerprinting is a laboratory technique used to identify individuals by analyzing their unique DNA profiles. It involves comparing specific regions of DNA to determine genetic identity or relatedness.

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

Which is not an application of DNA finger printing

  1. Solving immigration cases

  2. Solving parternity cases

  3. Curing SCID

  4. Identifying gene mutation
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

DNA fingerprinting is used for identification, forensics, and paternity, but it is not a therapeutic technique for curing genetic diseases like SCID (Severe Combined Immunodeficiency).

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

Some steps of DNA finger printing are given below. Identify the correct sequence from options given
a) Electrophoresis of DNA fragments
b) Hybridisation with DNA probe
c) Digestion of DNA by RENs
d) Autoradiography
e) Blotting of DNA fragments to nitrocellulose membrane

  1. c-a-e- b-d

  2. a-c- e - d-b

  3. c-a-b- e-d

  4. a-e-c-b-d
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The correct order is: digestion of DNA (c), electrophoresis (a), blotting (e), hybridization (b), and autoradiography (d).

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

In DNA finger printing, the process of DNA hybridisation with the help of specific DNA probe is called

  1. Western blotting

  2. Northern blotting

  3. Southern blotting

  4. All the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Southern blotting is the specific technique used to transfer DNA fragments to a membrane and hybridize them with a probe.

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

Which takes place in DNA finger printing

  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
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

DNA fingerprinting relies on the variability of repetitive sequences (like VNTRs) located between restriction sites, which creates unique patterns for individuals.

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

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.

  1. i, ii, iii

  2. ii, iii, v

  3. i, iv, v

  4. i, iii, iv
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

DNA fingerprinting is a PCR-based technique (ii), used in forensics (iii), and used for paternity testing (v). It is not ELISA-based and does not use physical finger prints.

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

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

  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
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The standard protocol is: extraction (c), fragmentation (d), electrophoresis (e), denaturation (a), blotting (b), hybridization (f), and exposure (g).