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 technology

Fingerprinting analysis is used by

  1. BPM

  2. BAM

  3. Centrasite

  4. Integration Server
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Fingerprinting analysis is a technique used by BAM (Business Activity Monitoring) to identify and categorize business transactions based on unique patterns or 'fingerprints' in the data. BPM focuses on process execution, CentraSite on governance/repository, and Integration Server on service execution - none use fingerprinting as a core analytical technique.

Multiple choice technology security

The testing or reconciliation of evidence of a user’s identity is:

  1. Authorization

  2. Accountability

  3. Auditing

  4. Authentication
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

To solve this question, the user needs to know the definitions of different security concepts and their applications. The user must identify the concept that refers to the testing or reconciliation of evidence of a user's identity.

Now, let's go through each option and explain why it is right or wrong:

A. Authorization: Authorization refers to the process of granting or denying access to a resource based on a user's identity and the permissions associated with that identity. This option is not the correct answer since it does not refer to the testing or reconciliation of evidence of a user's identity.

B. Accountability: Accountability refers to the state of being responsible or answerable for one's actions. This option is not the correct answer since it does not refer to the testing or reconciliation of evidence of a user's identity.

C. Auditing: Auditing refers to the process of tracking and evaluating the use of resources or actions taken by users to ensure compliance with policies and regulations. This option is not the correct answer since it does not refer to the testing or reconciliation of evidence of a user's identity.

D. Authentication: Authentication refers to the process of verifying the identity of a user or system. This includes the testing or reconciliation of evidence of a user's identity such as passwords, biometric data, or security tokens. This option is the correct answer.

Therefore, the answer is: D. Authentication.

Multiple choice

What is the first step in the southern blot technique?

  1. Denaturation of DNA on gel for hybridisation with specific probe

  2. Production of a group of genetically identical cells

  3. Digestion of DNA by restriction enzyme

  4. Isolation of DNA from a nucleated cell, such as the one from a scene of crime.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Southern blot is a procedure used for identifying a specific gene.

Multiple choice

Hypervariables are useful in

  1. DNA fingerprinting

  2. genetic engineering

  3. cloning

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

Hypervariables are useful in cloning.A hypervariable region (HVR) is a location within nuclear DNA or the D-loop of mitochondrial DNA in which base pairs of nucleotides repeat (in the case of nuclear DNA) or have substitutions (in the case of mitochondrial DNA).

Multiple choice

_____ is the study of the finger prints for the purpose of the identification.

  1. Dactylography

  2. Demonology

  3. Gerentography

  4. Nomadicology
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Dactylography is the scientific study and analysis of fingerprints for identification purposes. It is derived from Greek words 'daktylos' (finger) and 'graphia' (writing). It forms the basis of forensic fingerprint analysis used in criminal investigations worldwide. The other options are unrelated: demonology (beliefs about demons), embryology (study of embryos).

Multiple choice

What is the process of labelling of nucleic acid for identification of DNA called?

  1. DNA supercoiling

  2. Nick translation

  3. DNA splicing

  4. DNA mapping

  5. DNA fingerprinting
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

 A hybridization probe is a fragment of DNA or RNA of variable length (usually 100-1000 bases long), which is used in DNA or RNA samples to detect the presence of nucleotide sequences (the DNA target) that are complementary to the sequence in the probe. The probe thereby hybridizes to single-stranded nucleic acid (DNA or RNA) whose base sequence allows probe-target base pairing due to complementarity between the probe and target.

Multiple choice

What does DNA fingerprinting involve?

  1. Terminators

  2. RFLPs

  3. VNTRs

  4. c DNA

  5. PCR
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Variable Number Tandem Repeat (or VNTR) is a location in a genome where a short nucleotide sequence is organised as a tandem repeat. DNA fingerprinting uses this sequence more frequently.

Multiple choice

When RFLP investigation is used to examine a human gene, the approach is to first find out

  1. a known gene on the same chromosome

  2. a homozygous individual with a simple RFLP pattern

  3. particular DNA sequence located on the same chromosome

  4. particular DNA sign co-inherited with the specific genetic trait

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

Genes and anonymous DNA markers located near each other on the same chromosome are linked and do not segregate independently during meiosis.

Multiple choice

What is rif-lip technique used for?

  1. DNA profiling

  2. Genome mapping

  3. Determination of the risk of a disease

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

Rif-lip technique is used for DNA profiling, genome mapping and determination of the risk of a disease.

Multiple choice

Why is RFLP analysis done?

  1. To know base sequence of DNA fragment

  2. To detect change in the length of the restriction fragments

  3. To amplify smaller DNA segments

  4. To analyse chromosomes on basis of their shape to form a karyotype
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

RFLP analysis is done to detect the change in the length of the restriction fragments.