Biology · Law Legal Studies

Forensic Science Techniques

654 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 botany biotechnology: principles and processes downstream processing biotechnology biotechnology and its application

Which of the following recent techniques is used for separating fragments of DNA?

  1. Eastern blotting

  2. Northern blotting

  3. Southern blotting

  4. Western blotting
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Southern blotting involves DNA digestion, Gel electrophoresis, Blotting, Probe labeling, Hybridization and washing, and detection.

So, the correct option is 'Southern blotting'.

Multiple choice zoology biotechnology: general introduction application of biotechnology miscellaneous applications of biotechnology application of biology in therapy and vaccine

Which of the following are squares of glass, smallest than the smallest postage stamp

  1. Biochip

  2. Proteomics

  3. Forensic technologies

  4. None
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Biochips are squares of glass, smaller than smallest postage stamp, covered with millions of DNA strand. Biochip is a tool allowing rapid screening of gene profile to detect genes. They are called gene microarrays. A biochip contains all known human genes.

Multiple choice zoology biotechnology: general introduction application of biotechnology miscellaneous applications of biotechnology application of biology in therapy and vaccine

Which of the following biosensors is used for medical diagnostics and forensic science?

  1. Ozone biosensor

  2. DNA biosensor

  3. Microbial biosensor

  4. Both B and C
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

DNA biosensors have various applications, commonly used for medical diagnostics, forensic science, agriculture, or even environmental clean-up efforts. It function as the two strands of DNA stick to each other by virtue of chemical attractive forces and that is, two strands that match up at every nucleotide position gives rise to a fluorescent signal that is then transmitted to a signal generator.

So, the correct answer is option B.

Multiple choice botany why classification? modern classification system traditional method of animal classification salient features of five kingdoms classification hierarchy hierarchy of classification

For identifying organisms through key usually.

  1. Two contrasting characters are used

  2. One similar character is studied

  3. Two are more similar characters are used

  4. Only one statement called lead is used
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A taxonomic key works by presenting a series of choices between two contrasting characters (couplets) to identify an organism.

Multiple choice bio-chemistry biochemical techniques manipulation of dna electrophoresis isolation and separation of dna

DNA probe is used in:

  1. Gel electrophoresis

  2. Northern blotting

  3. DNA finger printing

  4. Interferon synthesis
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

DNA probes are essential in DNA fingerprinting to identify specific variable number tandem repeats (VNTRs) or other markers after they have been separated by electrophoresis and transferred to a membrane.

Multiple choice biology concept of life theories of the origin of life origin of life the origin of cells and cell division

Which one of the following is the most effect tool in species delimitation within the species complex?

  1. Cytogenesis

  2. Photochemistry

  3. RNA characterization

  4. DNA finger printing
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

DNA fingerprinting and molecular markers provide high-resolution genetic data, making them the most effective tools for precise species delimitation within complex species groups. Morphological and cytogenetic methods can sometimes be ambiguous, whereas DNA analysis reveals precise genetic boundaries.

Multiple choice zoology molecular basis of inheritance dna fingerprinting human genome project and dna fingerprinting instruments in biotechnology

Which of the following tests helps to solve crimes?

  1. Proteomics

  2. DNA fingerprinting

  3. Blood analysis

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

DNA fingerprinting is a test which is used to identify and evaluate the genetic information called as DNA in a person's cells. It is called as a "fingerprint" because it is very unlikely that any two people would have exactly the same DNA information, in the same way that it is very unlikely that any two people would have exactly the same physical fingerprint. The test is used to determine whether a family relationship exists between two people, to identify organisms causing a disease and to solve crimes.