A mother emailed her son’s teacher about his history of seizures. Months later, the teacher replied to the email to tell the mother about discipline problems. Communication eventually became very hostile. The teacher forwarded the conversation to her best friend, a teacher at the same school. The teacher’s friend does not have this boy in her class. The information about the boy’s seizures was at the very bottom of the email strand.…
For the pasts few decades, there has been a great development of the scientific area of DNA, deoxyribonucleic acid, helping on scientific research and most importantly as a tool for solving crimes. Before the usage of DNA, people only had shreds of evidence on the crime which could be detected by the naked eye. However, with the development of DNA detection technology, the police can identify or get some indication about the malefactor by collecting pieces of evidence that were impotent before; for example, hair, fingerprints and even blood (Travis, 1998). However, DNA testing consumes a lot of time and money. But even with this downfall, there is one unvarying fact: DNA testing is highly efficient in solving and preventing crimes.…
1. I believe DNA has had and continues to have such an impact on forensic science because a DNA sample can help figure out who was involved in a crime and even who was the person who committed the crime.…
I think DNA is such an important factor of forensic science because it could lead you to the suspect in charge of the crime.…
DNA has become one of the most accurate tools used in law enforcement in determining guilt or innocence. DNA is different in all people it is our “genetic blueprint.” DNA is so significant to law enforcement because DNA left at a crime scene can be collected and tested to see if there is a match. It is unique because it ensures accuracy and fairness.…
Since 1984 forensic scientists have been using DNA profiling to identify the potential perpetrators of crimes and to locate missing persons. In this Web-based activity, you will:…
1. After more than three decades in prison, a man in Florida was set free Thursday after a DNA test showed he did not kidnap and rape a 9-year-old-boy in 1974. James Bain, 54 was 19 when he was convicted on charges of kidnapping, burglary and strong-arm rape. Now he will be allowed to go home for the first time in 35 years. James Bain was convicted due to the victim picking him out of five photos. Bain kept pursuing DNA tests but was denied until the Innocence Project helped him.…
In this day and age it is a constant battle to keep up with the ever changing technologies. Being properly educated in this field can mean the difference in catching criminals by using their DNA. Knowing how to properly collect, handle, store, and use for evidence can hasten the process of putting a dangerous criminal away for good. Knowing where DNA can be obtained from is key. Sweat, skin, blood, semen, saliva & tissue all holds DNA. You can obtain DNA from a number of items such as a cigarette butts, inside of a hat, bandanna, dirty laundry, stamp, envelope, bottle, can, and so many more items too many to list them all.…
The pros of DNA profiling are that it can be used to quickly eliminate a suspect, saving time in searches for perpetrators. And it can provide compelling evidence to support a conviction and, most importantly, reduce the chances of a wrongful conviction.…
There are thirteen standard tandem repeats used in modern forensics, and together these sequences create a DNA profile. Except in the case of identical twins, the probability that two people have the same genetic code at all thirteen core loci is less than one in one trillion (Crest, 2005). Investigators compare these genetic fingerprints with profiles stored in databases of previous offenders, and if they find a match, it proves that the person was at the crime scene. DNA forensics can also narrow down suspect pools, exonerate innocent suspects, and link crimes…
The universal DNA database is important to the law enforcement agencies. The database will help the law enforcement agencies to identify suspects fast. When the universal data base is not used, it is very easy for a criminal to commit a crime and escape. The DNA universal database will improve the crime investigation thereby curbing the menace of criminals. When this takes effect, criminals might be extremely careful not to leave any trace that can help in getting their DNA for identification (Krimsky & Simoncelli, 2011). Nevertheless, the fear of being identified will result into a reduction in crime with many would be criminals staying away from crime. The implementation of the database will be a strong deterrent to first time offenders.…
Forensic science has come a long way with DNA, and using science to protect the innocent. We still have a long ways to go to keep the innocent from becoming a victim. With laws changing and the way that evidence is handled and recorded is a significant step in the right direction. We cannot change those that have already lost their lives due to the justice system. We can protect those now that are innocent and free those that are incarcerated under false…
There are many examplesd of DNA profiles can be used for something in a crime investigation such as blood, semen, saliva, urine, feces, hair, teeth, bone, tissue and cells. Two of the most important examples of DNA profiles can help the crime investigation uses a swab to collect the blood from a crime scene that left behind and a cigarette butt found at a crime scene may contain valuable DNA material in the dried saliva. Therefore, these known samples are called reference samples. In some of the jurisdictions, a DNA profiles is routinely taken from an arrestee during the process of booking and fingerprinting. So the DNA profile was used to identify the perpetrator.…
To begin with, DNA can be used to solve a crime. Investigators utilize DNA analysis to match suspects to crime senses, samples can be polluted with DNA from other sources.…
For instance, the history behind how DNA became a reliable tool in forensics goes all the way back to when DNA was first discovered. In the year 1869, a German chemist named Friedrich Miescher first discovered DNA, which he called nucleic acid (Johnson, 2013). However, it wasn’t until 1953 that biologists were finally convinced by Alfred Hershey and Martha Chase of DNA’s importance as the genetic material in organisms (2013). One year later, James Watson and Francis Crick deduced the structure of the DNA molecule. They proposed that it is a double helix with complementary nucleotide sequences (2013). Nonetheless, the most critical development in working towards using DNA in forensics was when Kary Mullis created the Polymerase Chain Reaction in 1983 (2013).…