Forensics in Serology Quiz Crafted By-
Harsha Sharma
Introduction to Forensics in Serology
Forensic serology is the application of immunological and biochemical methods to identify the presence of a body fluid or tissue sample encountered in connection with the investigation of a crime and the possible further genetic characterization of the sample with a view to determining likely donors thereof. Here, the genetic characterization involves polymorphic antigens and the proteins present on the blood cells, and does not include DNA genetic markers. Forensic serology thus is the study and examination of body fluids such as blood, semen, sweat, urine, saliva, fecal matter, and other fluids mainly for identification purposes in criminal/medicolegal investigations. Blood is the most commonly recovered and one of the most important pieces of evidence utilized in forensic investigations. It is commonly recovered in cases of homicide, assault, and terrorist attacks, including bomb blasts. Blood as evidence holds significance in the criminal justice system as it can link a crime with a criminal or exclude an individual’s involvement in a crime. Moreover, the pattern of blood stains can help in reconstruction of a crime scene by conveying information about the relative position and movement of the criminal and victim at the crime scene.
Let's look at the questions and their answers.
Ques 1. Maintenance of the correct number of chromosomes in cell division (mitosis) is dependent on a process of
a) DNA Mutation
b) DNA Duplication
c) Single nucleotide polymorphism
d) All
Answer-b) DNA Duplication
Ques 2. Sperms are stored and matured in one of the following:
a) Epididymis
b) Vas deferens
c) Testis
d) Seminal vesicles
Answer-a) Epididymis
Ques 3. Apart from humans, P3O in seminal stain is found in :
a) Cow
b) Rat
c) Cat
d) Fowl
Answer-c) Cat
Ques 4. The most suitable solvent system for chromatography of blood sample is :
a) Ethanol: Acetic acid: Water (92:1:7)
b) Methanol: Water (70:30)
c) Chloroform: Ethanol (40:60)
d) Methanol: Acetic acid: Water (90:3:7)
Answer-d) Methanol: Acetic acid: Water (90:3:7)
Ques 5. Which of the following would be considered as Individual Evidence :
a) Blood
b) Soil
c) Paint
d) DNA
Answer-d) DNA
Ques 6. Which of the following test is used to determine whether the blood belongs to human or animal :
a) O-toluidine Test
b) Phenolphthalein Test
c) Benzidine Test
d) Precipitin Test
Answer-d) Precipitin Test
Ques 7. The sex of an Individual can be determined by the following, except :
a) X-Y Chromosome
b) Barr-Bodies
c) Protein Pattern
d) Testosterone/Estradiol ratio
Answer-d) Protein Pattern
Ques 8. A technique used for increasing the amount of a specific segment of DNA is called :
a) DNA Replication
b) DNA Amplification
c) Denaturation
d) VNTR
Answer-b) DNA Amplification
Ques 9. Which of the following is not a red cell blood group system?
a) HLA
b) Kell
c) ABO
d) Duffy
Answer-a) HLA
Ques 10. Colustrum is a form of:
a) Milk
b) Semen
c) Saliva
d) Blood
Answer-a) Milk