Fingerprint Patterns And Genetic Identification

Observe: Describe frog A’s phenotype. Frog’s A has a presence of spots located on the body, and the eye color is pink. Also, the skin color is orange.

With over three million base pairs in the human gene, forensic scientists are able to distinguish a person’s genetic makeup.

During the research, there were a number of experiments conducted to determine the best approach to imaging latent fingerprints. These experiments were divided into phases and each phase served as a building block for the next phase.

of a DNA fingerprint conducted on three babies and three sets of parents to determine

The next significant advancement in fingerprinting was achieved by an Englishman, Dr. Henry Faulds, who created a fingerprint classification method and suggested using printers’ ink to obtain quality fingerprints (The History of Fingerprints). Perhaps the most important advancement in fingerprinting came in 1892, when a British Anthropologist, Sir Francis Galton, published the book Fingerprints. For a while it had been thought that no two fingerprints were identical. However, Galton became the first to scientifically prove this, as well as the fact that fingerprints remain unchanged throughout a person’s life (The History of Fingerprints). It was these two facts that made fingerprinting the preferred method of identification.

When analyzing DNA, the analysts create a DNA profile for each evidentiary piece of DNA. The DNA profile is based on 13 markers, or locations, within the genome. These 13 markers are chosen because they show a high variability between individuals. By using these 13 markers, the probability of 2 individuals having the exact same 13 markers is infinitesimal. But DNA profiles as they are now are made for identification purposes only. The profiles are not meant to contain personal genetic information (Matheson, 2016). But through the work of Susan Walsh, together with colleagues in the Netherlands, they have been able to create models for eye colour and hair colour. For the model on eye colour, they have a 95% accurate predictability rate, but only for brown and blue eyes. They have not done as extensive of work on the other colours of eyes. For the model on hair colour, they have a 90%

DNA Fingerprinting, also known as DNA Profiling, is a method used to identify a person using DNA patterns that are specific to him/her. 99.9% of DNA is identical in every human being, but .01% is enough to distinguish between people. It is most commonly used in criminal cases to link a criminal to his/her crime scene, but is also used for paternity/maternity tests, and immigration records. Usually a skin, hair, or body fluid sample is collected from a crime scene or criminal or test candidate, then DNA is extracted and cut using enzymes that recognize patterns in DNA and run through a gel by an electric current in a process called electrophoresis (Annely).

“Fingerprint recognition is one of the divorce inference using the impressions made by the minute ridge formations or patterns found on the fingertips. No two people have exactly the same arrangement of the ridge patterns, and the remaining patterns of any one individual unchanged. Fingerprints infallible provide a means of personal identification. Other personal characteristics may change, but not fingerprints”. (1)

The fingerprint scanner that is incorporated in our phones nowadays is an easy way to accesses them. It amazes me how not a single other person shares my same fingerprint. In the same way, not a single human in this world shares the exact same social identity as me. Personally, I have come to be who I am today by the process of thinking, reasoning and forming my own opinions. Allow me to introduce myself. I am a male Latino college student with a middle-class socio economic status that is getting an undergraduate double major in Robotics and Electrical and Computer Engineering here at WPI.

DNA fingerprinting is a technique that is used to determine how likely it is whether genetic material came from a specific person or family group. Since 99% of human DNA is identical, that means that it is only 1% of our DNA which is different, and it is that 1% that we look at when we are attempting to determine the origin of a DNA sample.

Offspring differ somewhat from their parents and from one another. Instructions for development are passed from parents to offspring in thousands of discrete genes, each of which is now known to be a segment of a molecule of DNA. This essay will explore some of the reasons behind how and why these differences in appearance arise, from the base sequence of DNA through to the observed phenotype.

Fingerprints, known for each person to have unique ones, are made of a series of ridges and furrows on the

Every time somebody touches something, they leave behind a unique signature that forever links them to that object. This link is their fingerprints, which are unique to every person, for no two people have the same set, not even family members or identical twins. Palms and toes also leave prints behind, but these are far less commonly found during crime scene investigations. Therefore, fingerprints provide an identification process that is applicable to background checks, biometric security, mass disaster identification, and most importantly, crime scene investigations. Fingerprints are so differentiated because they are made up of distinct patterns of ridges and furrows on the fingers. The ridges are the “raised” portions of the prints, and the furrows are the “recessed” portions. This perceived uniqueness has led some people to falsely accept fingerprint analysis as absolute scientific fact. Although overall fingerprints are reliable, there are definitely situations where their accuracy can come into question.

Pattern-matching method verifies the identity of the patterns by directly comparing the objective fingerprint images with the registered image.[ 1]

The process of DNA fingerprinting in humans involves the replication and arrangement of extracted DNA, to create a pattern/fingerprint that is viable for comparison. This process involves the application of DNA extraction, digestion by restriction enzymes, Polymerase Chain Reaction (PCR) and gel electrophoresis. This results in a DNA profile with bands of varying widths that can be used for the comparison of genetic information. DNA extraction occurs in three stages. Firstly, a