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Forensic Sciences

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christina sakellis

on 16 January 2013

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Transcript of Forensic Sciences

By:Christina Sakellis
and Selena LaRocque What is Forensic Science? Forensic Science is the application of science to law. Any science can be related to a legal situation: forensic biology, forensic chemistry, and forensic toxicology Forensic Botany Forensic Entomology Forensic Pathology Forensic Botany Forensic botany is the application of plants to solve legal problems. Forensic Pathology Forensic Pathology is the application of medical science to legal problems. A forensic scientist does not do all the jobs, as seen on tv,
but specializes in one specific area. For example, a forensic
anthropologist would not be doing the work of a forensic
botanist. Examples of plant materials forensic botanists use are:
seeds, leaves, flowers, fruits, twigs, charcoal, wood, pollen, spores, ect. The Lindbergh Kidnapping Plant evidence falls under the category of trace evidence This can help investigators connect a suspect, a victim, or an object to a crime scene This evidence can be used to identify a murder location, a suspect alibi, or whether a body has been moved from the scene of the murder Dr. Arthur Koehler Forensic Botany and Our Plant Unit Forensic Pathologists are physicians who specialize in injury interpretation and death investigations
Example: Determination of cause and manner of death Forensic Pathologists make valuable contributions to public safety. Example: life threatening communicable disease. To determine the identity of the victim and other details of a murder the forensic pathologist: - studies medical history
- evaluates crime scene
- preforms autopsy
- collects medical and trace evidence from the body for further analysis Forensic Pathology and Our Physiology Unit Some test that a forensic pathologist might preform are:
-Serologic What is Serology? Serum is a liquid component of blood composed of water, trace minerals, and several proteins Many body fluids, such as blood, contain serum Serological tests are used primarily for infection diagnosis and blood typing When red and white blood cells are removed from blood you are left
with a clear yellowish coloured liquid, this liquid is serum. Serum is the same as
plasma just without the clotting affect. Some insects such as flies prefer specific habitats to lay their eggs Such as,
indoor vs. outdoor
shade vs. sunlight For example, if the larvae of flies that like to lay eggs outdoors are found on a body indoors it can tell the investigator that the body had been moved from the original crime scene Forensic Entomology and our Evolution Unit Forensic Entomology Forensic Entomology and Our Evolution Unit Bugs and Investigations Forensic Botanists look for many things that would help them determine the cause of death. One thing they look for is pollen. If pollen is found on the body they might be able to trace the origin of the pollen back to the area that the body was originally from. Forensic Entomologists can take a bug found on a decomposing body and use it to tell how long that body has been decaying for They take the bugs and see what stage they are at in their life cycle

Depending where they are the scientists can work backwards figuring our how long it takes the bug to grow to that stage thus knowing how long the body has been in that spot Forensic Pathology and Our Physiology Unit "If the law has made you a witness, remain a man of science. You have no victim to avenge, no guilty or innocent person to convict or save - you must bear testimony within the limits of science."

- Dr. P.C.H. Brouardel, 19th Century French Medico-Legalist To help with the investigation they use different techniques such as:
-species succession
-larval weight
-larval length Forensic Entomology is the use of insects and their developmental stages to solve legal problems Forensic entomology is most commonly used to determine the postmortem interval using insects Pollination Conclusion.... With the knowledge we obtained through our plant, evolution, and physiology units we were better able to understand forensic botany, entomology, and pathology.
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