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Differences and similarities between identical twins
Differences and similarities between identical twins
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Many wonder if two people can have the same or similar fingerprints. Do identical twins have the same fingerprints? How are fingerprints even made? Scientists have studied fingerprints because they can teach us about genetics, solving crimes, and even the humans sense of touch. Fingerprints are most important because they are used for identification, which is why they are a part of forensic science, the use of science to study criminal and civil laws.In the world there nobody has the exact same fingerprint as another person, even identical twins don't have the same fingerprint. Every person's fingerprints are unique.
Fingerprints are patterns made up of raised ridges, called friction ridges. The part that is indented is called furrows. A fingerprint
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Genetics is the study of heredity. half of everyone’s genetic information comes from the mother and half comes from the father. This information is passed on to the child in reproductive cells called gametes, sperm from the father and eggs from the mother. These cells are called haploid cells because they carry half of the genetic information of the child. Characteristics you get from a blood relative is called inheritance. This is why diseases run in the same family. A description of physical characteristics is called a phenotype. This could be an eye color or disease history. A characteristic caused by genetics is called a trait. It could be something like your personality or even your eye …show more content…
The epidermis creates skin tone and is the outermost layer of skin. It is also waterproof. The epidermis is also super thin on some parts of a human body, like the eyelids. Some jobs that the epidermis has is to make melanin, which is what gives a human it's skin color. The second layer of skin is the dermis. The dermis is under the epidermis and is tough connective tissue that contains sweat glands and hair follicles. The dermis has a lot of jobs, including helping people feel things. It sends signals to the human brain so people know if something hurts. It is also where hair is grown, from the root up. The third layer is the subcutaneous fat, which attaches the dermis to your muscles and
The second layer of the skin is called the dermis and is also known as the middle layer. The dermis is what holds the body together. The dermis has layers to it as well as the epidermis. There are two layers to the dermis, the papillary layer and the reticular layer. The cells of the dermis are fibroblast, macrophages, mast cells, and scattered white blood cells (wbc’s). the dermis is richly supplied with nerve fibers and BV;s. dermal BV’s is also a part of the integumentary system, dermal BV,s have converging and diverging vessels that ar...
The integumentary system is composed of the skin and the structures related to the skin, which include the hair, the finger nails, the sensory receptors and the glands (Shier, Butler, & Lewis, 2009). This system has an important function since it provides protection to the body, helps to maintain body temperature, and contains sensory receptors (p.117). The skin has essential function such as regulating homeostasis and body temperature, also delaying the loss of water from deeper tissues, storing sensory receptor, synthesizing biomechanical, and discharging waste from the body (p.117). The skin has two layers: the epidermis (outer layer) and the dermis (inner layer) (p.117). There is also a subcutaneous layer or hypodermis (p.117). According to Shier, Butler, and Lewis 2009 “as its name indicates, this layer is beneath the skin and not a true layer of the skin” (p.117). This layer has the blood vessels that supply the skin (p.117).
It is much thicker than the epidermis and contains collagen, reticular and elastic fibers, and is vascular. The area where the dermis meets the epidermis is unique in that the epidermis contains ridges at the stratum basale layer which interlocks with the dermal papillae, which are upward projections, like waves, on the uppermost surface of the dermis. The dermis had two sublayers. The papillary layer is in the dermal papillae and near it and is made up of areolar tissue. The reticular layer is dense irregular connective tissue that is found at the basal end of the dermis and contains collagen and adipose
Thesis Statement: In this speech I am going to explain how forensic teams use fingerprints to identify individuals.
...the unknown print or some other person could have made it. The bottom line is that only one person could leave the unknown print. It is the responsibility of the fingerprint expert performing a comparison to reach this conclusion. Therefore, fingerprint identification is based on sound scientific principles.
The epidermis and dermis are tissue layers that make up the skin (integument) covering the body. The layers (strata) of the epidermis range from four to five, depending on where they are on the body; and are classified into two types of skin: thin skin and thick skin. Most of the body is covered in thin skin, which has four layers. Areas of the body that are heavily exposed to stress and pressure (palm of hand and sole of feet) are covered in five layered thick skin. Thin skin has the following
After the skin, there is a layer called the dermis. The dermis is a broad layer of fibrous and elastic tissue (made mostly of fibrillin, elastin, and collagen) which gives the skin its flexibility and strength. The dermis incorporates nerve endings, sweat glands and oil glands, hair follicles, and blood
The three different main types of fingerprints are Loops, Arches, and Whorls (Jackson 1). Henry Faulds is known as the Father of Fingerprints and developing fingerprints (Jackson 1). His discovery of fingerprints has made a huge impact not only in his time but, in Modern Crime Scene Investigation (Jackson 1). Without fingerprinting, it would be very difficult to convict criminals of crimes and very hard to try to process information. Crime Scene Investigators make a huge impact in Forensic Science. We need CSI workers, without them people could only imagine what crime would be like not only in our community, but in our
The first layer, the epidermis, contains keratin which is a water proof protein. This makes the body water proof and keeps water from entering the body. This layer also consist of two specialized cells, langerhans cells and melanocytes. Langerhans cells are macrophages which is a white blood cell that phagocytize infectious agents. They then travel to lymphatic organs. Melanocytes lye deep in the epidermis, and produces melanin. This is the main pigment for skin color. The second layer, the dermis, is a fibrous connective tissue. It is made up of dense fibrous connective tissue and consist of collagen and elastic fibers. The purpose of the collagen fibers are to allow stretching to prevent tearing of the skin; unlike the elastic fibers which only allows for normal tension for stretching, allowing movement of muscles and joints. As we age, the fibers become weaker causing the skin to wrinkle. The blood vessels in the dermis help
The Automated Fingerprint Identification System or AFIS is a biometric identification technique that utilizes computerized imaging technology to obtain, store, and analyze fingerprint data. The AFIS was initially utilized by the FBI in criminal cases. Recently, it has been utilized for general identification and fraud prevention. This essay will summarize the case, State v. Keith and briefly explain the purposes and impediments of computerized fingerprint systems.
The three major classes of fingerprints include sub classes known as ridge patterns. A plain arch is the type of pattern where the ridges enter on one side of the finger, make a wave or a rise in the center and tend to flow out the opposite side of the finger. A tented arch is the type of pattern where the ridge line displays an angle, an up thrust, or two of the three characteristics of a loop. An ulnar loop is the type of pattern ...
Fingerprint usage dates back to the 1800s. Sir William Herschel used the prints as signatures on civil contracts, before they were found useful towards crimes (History of Fingerprints Timeline, 2012). A British surgeon, Dr. Henry Faulds, wrote about using fingerprints for personal identification. He first looked at prints on clay pottery and studied the ridges and patterns that they had made in the clay. In 1891, Juan Vucetich suggested to start fingerprinting criminals to keep the prints on record. The following year, Vucetich identified a print from a woman who killed her two sons. Investigators found her print and were able to correctly match her identity. Charles Darwin’s cousin, Sir Francis Galton, wrote and published the first book about fingerprints. He wrote about how every individual has a unique print by the certain traits of each fingerprint (History of Fingerprints, 2012). The popularity of fingerprints grew greatly in the United States in the early 1900s. Police departments and the FBI began to use the...
The skin has 3 main function. It has to regulate body temperature, remove waste (perspiration), and protect. The skin is made up of 3 layers. The epidermis is the outer thinner layer of the skin that is made up of dead and living cells. The dermis is the thicker middle layer of the skin that contains blood vessels and nerves. Sweat glands are found in the dermis, they secrete perspiration through ducts to pores on the skin’s surface. To avoid problems like warts, boils, moles, acne, and sunburn you can wash your body daily, wear sunscreen that is 15 or higher, and check your body often...
Genetics is the passing of characteristics from parents to offspring through genes. Genes are information
...ir genetic material are passed on as DNA which is the map of the new unique human being formed after conception. The genetic material determines specific traits in the newly created life both physically, mentally and emotionally as the individual has to take after the mother and father. It can also determine if a genetic disease is to be in the future for this life. In essence, the role that genetics play in human development is the instructions under which we are all assembled.