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Forensic Science

Criminal cases are very dependent upon evidence to prove or disprove the facts of the case. The analysis of evidence requires a wide breadth of scientific knowledge and the latest scientific techniques as well as proper evidence procedures.

1,792 Questions

Who collects the physical evidence at a crime scene such as dried blood and fibers?

Forensic technicians and crime scene investigators are responsible for collecting physical evidence, such as dried blood and fibers, at a crime scene. They follow strict protocols to properly document, collect, and preserve evidence for analysis in the laboratory.

To do forensic science do you need to go to university?

Yes, most forensic science positions require at least a bachelor's degree in forensic science or a related field like biology, chemistry, or criminal justice. Some roles may require a master's degree or specialized training depending on the specific job responsibilities.

What is palynology?

Palynology is the study of pollen grains and spores, primarily in relation to plant reproduction. It is used in various scientific fields, including botany, geology, and archaeology, to study pollen grains' distribution, composition, and characteristics to understand past climates, ecosystems, and evolutionary processes.

How much money do park rangers make in a year?

The annual salary of a park ranger varies from state to state. It depend on the state's budget, the classification title level of the park ranger, and the duties preformed. Average yearly pay would be- $27,895.68 to $40,110.48 & big bois

What causes DNA evidence to deteriorate?

DNA evidence can deteriorate due to exposure to heat, humidity, light, and contamination with substances like chemicals or microorganisms. Environmental factors such as sunlight, moisture, and high temperatures can break down DNA molecules over time, impacting their integrity and suitability for analysis. Additionally, improper storage and handling of DNA samples can compromise their quality and lead to degradation.

Why is fingerprint examination is perhaps the most well established of all the forensic science?

Fingerprint examination is considered well established in forensic science because of its reliability, uniqueness, and permanence. Fingerprints are unique to each individual, ensuring accurate identification, and the patterns do not change over time. The extensive databases of fingerprints make it easier to match and identify suspects, making it one of the most reliable forms of evidence in forensic investigations.

What is used to identify a dog like a finger print is used to identify a human?

A dog's nose print is unique to each individual dog, similar to a human fingerprint. Nose prints can be used as a form of identification for dogs in the same way fingerprints are used for humans.

What is the average salary for a forensic scientist?

The average salary for a forensic scientist in the United States is around $60,000 to $80,000 per year. Salaries can vary based on factors such as level of experience, location, and employing organization.

What is the average salary for scientist?

The average salary for a scientist varies depending on factors such as experience, field of study, and location. In the United States, the average salary for a scientist is around $80,000 to $100,000 per year. However, this can be higher or lower based on individual circumstances.

Identifying Parents After Many Years?

There are some situations that come up in modern society in which children are separated from their parents. There is the case of adoption, for example. A mother and father can give their child up for adoption if they so choose. The child can then be taken by another family who wants to have a child but does not desire to have one of their own. This also is done by couples who are unable to have their own for medical reasons. When the child grows up, though, he or she may want to know more about those birth parents.

This is not the only way in which a child could be separated from his or her parents. If a woman is not sure who a child's father is because there are two different men who could realistically claim the child, for instance, she might not live with either of the men. She could then not tell the child, when it grew up, who its father really was. There is one way to answer this question that is successful all of the time, that cannot be inaccurate just because of the way that people are made.

The solution is to figure out who the child's parents are by looking at paternity DNA. A child gets half of its DNA from the mother and half from the father. By looking at these strands of information that are present within the very cells of all humans, doctors can know without a doubt who the person is and who the person's parents are. This is an expensive procedure, but it is the best way for a child who wants to meet his or her parents to be sure that the people claiming to be the parents really are who they say they are.

In many ways, this process operates along the same lines that the police officers and forensic scientists use when they try to solve a crime. If they have DNA from the person who committed the crime, they can compare it to the suspects' DNA information. Whichever suspect is a match is the one who had to have committed the crime.

Are forensic scientists allowed to have tattoos?

Yes, forensic scientists are allowed to have tattoos. However, there may be workplace policies that restrict visible tattoos for professional reasons, especially if they could potentially interfere with evidence collection or presentation in court.

What do you know about FORENSIC LAB DNA LAB SAMPLING?

Forensic DNA sampling involves collecting biological samples, like blood or hair, at a crime scene. These samples are then analyzed in a forensic DNA lab to identify suspects or victims. The process is crucial in solving crimes and providing evidence in court.

What happens if forensic scientists did not exist?

Without forensic scientists, it would be challenging to collect and analyze evidence crucial for solving crimes. This could result in a higher rate of unsolved cases and potentially innocent individuals being wrongly convicted. The justice system would also lack important scientific support in investigating crime scenes and presenting evidence in court.

What method of preparing DNA for forensic analysis?

Forensic DNA analysis typically involves extracting DNA from a sample, quantifying it, amplifying specific regions using PCR, and then analyzing the resulting DNA profile using techniques like capillary electrophoresis. The extracted DNA is compared to known reference samples to determine a match or exclusion.

How are fingerprints discovered at crime scenes?

Fingerprints are typically discovered at crime scenes through various techniques such as powder dusting, chemical processing, or using alternate light sources to reveal prints left behind on surfaces. These techniques help to make the latent prints visible for collection and analysis by forensic investigators.

What is a medulla What do forensic scientists use this for?

The medulla is the central portion of a hair strand. Forensic scientists use the medulla for hair analysis and comparison, as the medulla's characteristics can help identify the species of origin and potentially differentiate between individuals.

These appear white on a finger print image?

Ridge details such as minutiae points that are found in finger prints can appear as white ridges on an image due to the contrast created between the ridges and the background of the print. This contrast highlights the details for easier visualization and analysis by forensic experts.

Which is a method to prepare DNA for forensic analysis?

One method to prepare DNA for forensic analysis is called DNA extraction. This involves isolating DNA from the sample using various techniques, such as chemical or mechanical disruption of cells, enzymatic digestion, and purification steps to obtain high-quality DNA for analysis.

How can digestion rates give information to forensic scientists about the time of death?

Digestion rates can provide insights into the time of death by estimating how long ago a person consumed a meal based on the stage of digestion of food in the stomach and intestines. By analyzing the extent of digestion of food particles and comparing it to typical digestion rates, forensic scientists can approximate the time since the last meal, which can help narrow down the time of death. This information, along with other forensic evidence, can contribute to determining the timeline leading to death.

Hair from what parts of the human body are commonly used for forensic comparison?

Hair from the head, arms, and legs are commonly used for forensic comparison. These hairs have different characteristics and can provide valuable information in forensic investigations such as identifying a person, determining drug usage, or analyzing toxic substances.

Why would a disk's bad blocks be interesting to a forensics investigator?

Bad blocks on a disk can indicate attempts to hide or damage data, suggesting potential deliberate acts to obscure evidence. Identifying and analyzing bad blocks can reveal patterns or anomalies that may be relevant to a forensic investigation, shedding light on attempts at tampering or manipulation of data.

What are the methods of preparing DNA for forensic analysis?

DNA for forensic analysis is typically prepared using methods such as DNA extraction from biological samples, quantification of DNA concentration, amplification of specific DNA regions using PCR, and analysis of the DNA profiles through techniques like gel electrophoresis or DNA sequencing. Additionally, DNA samples are often treated with chemicals to remove contaminants and prevent degradation before analysis.

What physical evidence obtained from the crime scene could be used to obtained DNA?

Examples of physical evidence that could be used to obtain DNA include blood stains, hair follicles, skin cells, and saliva. DNA can be extracted from these samples and analyzed to help identify potential suspects or victims in a criminal investigation.

What is the most important thing when recording a crime scene?

The most important thing when recording a crime scene is to ensure the preservation of evidence. This includes taking photographs, videos, and detailed notes of the scene before any evidence is disturbed or moved. It is crucial to document the scene thoroughly to maintain the integrity of the investigation.

When scientists copy DNA they first to cut out the part they want to copy what molecules do they use to do this?

Scientists use restriction enzymes to cut out the specific part of DNA they want to copy. These enzymes recognize and cut DNA at specific sequences, allowing researchers to isolate the desired section for replication.