Forensic Science And Profiling - Qp3

Explanation
Thumbprints were not used as a form of signature and method of identification in Ancient Russia. This statement is false.

Explanation
Dactyloscopy is indeed a method used to study fingerprints for the purpose of establishing identification. This technique involves analyzing the unique patterns and ridges present in fingerprints, which are considered to be highly individualistic. By comparing fingerprints found at a crime scene with those in a database or on record, investigators can determine the identity of a person. Therefore, the statement "Dactyloscopy is a method of studying fingerprints to establish identification" is true.

Explanation
Juan Vucetich developed his own method of collecting and cataloguing fingerprints, which he called Comparative Dactyloscopy. This method was significant in the field of forensic science as it allowed for the identification of individuals based on their unique fingerprints. Vucetich's work laid the foundation for modern fingerprint analysis and identification techniques that are still used today.

Explanation
In 1901, Scotland Yard opened its first Fingerprint Bureau. This suggests that prior to this year, the bureau did not exist. The establishment of the bureau indicates a significant development in the field of forensic science and law enforcement. Fingerprint analysis became an important tool for identifying and linking suspects to crimes, revolutionizing criminal investigations.

Explanation
The statement is false because the given percentage, 33.3%, implies that only a third of the population have ridges that form loops. This suggests that the majority of the population does not have loop ridges, making the statement false.

Explanation
Silver chloride is a compound that is sensitive to light and is commonly used in photographic materials. When exposed to light, silver chloride undergoes a chemical reaction that results in the formation of silver particles. These silver particles are responsible for capturing the image on photographic film or paper. Due to its light sensitivity, silver chloride is an essential component in the development of traditional photographic materials.

Explanation
Rigor mortis is the stiffening of the muscles that occurs after death. According to the explanation, rigor mortis starts after about three to four hours, reaches its peak stiffness after 12 hours, and then gradually diminishes until approximately 48 to 60 hours after death. This information suggests that the statement "Rigor Mortis commences after about three to four hours, reaches maximum stiffness after 12 hours, and gradually dissipates until approximately 48 to 60 hours after death" is true.

Explanation
The given statement suggests that in the search for footprints, similar methods used for detecting fingerprints at a crime scene are employed. This includes the use of chemical enhancers to make footprints visible, especially when there is blood or other trace evidence present on the sole. Therefore, the statement is true.

Explanation
The research and collection of ear prints began in 1997 and involved primarily volunteers.

Explanation
Palm prints, like fingerprints and footprints, are unique to each individual. This means that no two people have the exact same palm print. Just like fingerprints, palm prints can be used for identification purposes as they contain distinct patterns and ridges that are specific to each person. Therefore, the statement is true.