Dead Giveaway
A death caused entirely by disease, such as fatal complications of cancer, is classified under this manner of death.
What is Natural?
This process is used to make millions of copies of specific regions of DNA before forensic DNA profiling.
What is PCR (Polymerase Chain Reaction)?
When photographing a piece of evidence, investigators typically take overall, midrange, and this third type of photograph, which documents the item's details and is often taken both with and without a scale.
This type of test is used as an initial screening for a suspected drug but cannot by itself conclusively identify the substance.
What is presumptive test?
This scientist established a police crime laboratory in Lyon, France, and is associated with the principle that “every contact leaves a trace.”
Who is Edmond Locard?
A decedent is found with purple/red discoloration along their back that disappears when pressure is applied. This tells investigators this postmortem change has not yet become fixed:
What is Livor Mortis?
A reddish brown stain turns bright pink after phenolphthalein based reagents are applied. This presumptive test is commonly known by this name.
What is Kastle Meyer Test?
Packaging damp biological evidence in plastic can trap moisture and promote the growth of this, potentially damaging the evidence.
What is Mold?
Under the federal Controlled Substances Act, drugs are divided into five schedules. This schedule is considered to have the highest potential for abuse and no currently accepted medical use under federal law.
What is Schedule 1?
This specialist studies insects associated with remains, with insect development and succession potentially providing information about the postmortem interval.
What is Forensic Entomologist?
Investigators want to estimate how long a person has been dead. This interval between death and examination/discovery is commonly abbreviated PMI.
What is Post Mortem Interval?
Bloodstains cover a wall except for one noticeably clean area where an object or person blocked the blood from reaching the surface. This absence of staining is known as this type of bloodstain pattern.
What is a Void Pattern?
This documentation creates a record of every person who collects, receives, transfers, or handles an item of evidence throughout an investigation.
What is chain of custody?
Cocaine and methamphetamine fall into this drug category because they increase activity in the central nervous system.
What are stimulants?
This British geneticist developed DNA fingerprinting in 1984, fundamentally changing forensic identification.
Who is Sir Alec Jeffreys?
During examination of skeletal remains, a fracture has sharp edges and plastic deformation but no evidence of healing. What kind of trauma is this classified as? (Ante, Peri, or Postmortem)
What is Perimortem Trauma?
In sexual-assault evidence processing, analysts may use this extraction technique to separate sperm cells from epithelial cells before generating DNA profiles.
What is Differential Extraction?
To document the location of an item of evidence, an investigator takes measurements from the evidence to two fixed reference points. This is known as this measurement method.
What is Triangulation?
Forensic scientists can separate the different substances contained in a drug sample using this technique, which includes methods such as gas and liquid versions.
What is Chromatography?
To determine whether two bullets have corresponding microscopic striations, a firearms examiner can simultaneously examine both specimens in a split field of view using this instrument.
What is Comparison Microscope?
A decedent is discovered lying flat on their stomach with their face and anterior surface directed downward. Investigators would document the body as being in this position.
What is Prone?
An STR electropherogram contains a small additional peak located one repeat unit shorter than a much larger allele peak. This common amplification artifact can complicate interpretation of DNA mixtures.
What is a stutter peak?
Unlike latent and patent prints, this third type of fingerprint is formed when friction ridges are impressed into a soft material such as wax, putty, or wet paint?
What is Plastic Fingerprint?
In forensic drug analysis, this instrument combines one technique that separates the components of a mixture with another that identifies compounds based on their mass to charge ratios and fragmentation patterns.
What is GC-MS (Gas Chromatography Mass Spectrometry)
This professor's research, “Forensic Reconstruction and Forensic Taphonomy: An Experiment for a High-Profile Case Conducted for the First Time in Chile,” earned him the AAFS Robert Gaffney Achievement Award.
Who is DR G!!!!!