ZOOL 1 Lecture 3 1 2 ¡ ¡ ¡ ¡ Chemical substances that cannot be broken down to simpler forms by ordinary chemical reactions Atom Atomic number Atomic mass Compound Molecule Macromolecule 3 ¡ ¡ ¡ ELEMENT Oxygen Carbon Hydrogen Nitrogen Calcium Phosphorus Potassium Sulfur
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DNA and Evidence DNA is one of the most important roles to evidence and in a criminal case. It helps to prove a convict guilty or help those wrongly accused or convicted. DNA stands for deoxyribonucleic acid. Just about every cell contains DNA. The DNA that’s in people blood is also the same DNA in people’s hair‚ bone‚ saliva‚ skin‚ tissue and everything else. What’s great about someone’s DNA it does not ever change throughout their life. DNA was first used as a way of finding out paternity so
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DNA Worksheet Answer the following in at least 100 words: 1. Describe the structure of DNA. A molecule of DNA is made up of long chains of polymers and monomers called nucleotides. Those chains‚ two in particular that compose a strain of DNA‚ are formed by the grouping of nucleotides into polynucleotides. A nitrogenous base‚ a sugar‚ and a phosphate group make up the composition of a nucleotide. In the case of DNA‚ the four nucleotides that are found along the chain of DNA are thymine (T)
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Draft 5\9\10 Understanding DNA Have you ever wondered how you got red hair or blue eyes? Well all that has to do with your genes. To have different genes you have to have a deoxyriboncleic acid or DNA for short. Without Dna everyone would and everything would look the same and that would make life really confusing. Your DNA has a very important role in life. Its most important role is to give everyone character. Every Dna chromosome is made the same according to species
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are The cell is the fundamental unit of life. - Cells come from the division of pre-existing cells. B. Cell Structure and Composition CELL MEMBRANE -Serves as the outer boundary of the cell. It is a selective permeable membrane which permits the entrance of substances throughout the cell. CYTOPLASM -Serves as the reservoir of the organelles as it contain all the lifesustaining components. It is a jellylike structure. NUCLEUS -Usually located at the center and known
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The amazing advances in health science‚ DNA is transforming the way in which criminal investigations and trials are carried out. DNA evidence and its importance can rest on a single fact: Every individual’s DNA is unique. A person’s DNA profile can be used similar to a fingerprint to link suspects to crime scenes and its victims. DNA profiling—which is also called DNA fingerprinting or even DNA typing—has been responsible for overturning verdicts and saving innocent people from execution. The process
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main source of evidence. Notoriously unreliable‚ these techniques have since faded away to the stunning reliability of DNA forensics. In 1984‚ British geneticist Alec Jeffreys of the University of Leicester discovered an interesting new marker in the human genome. Most DNA information is the same in every human‚ but the junk code between genes is unique to every person. Junk DNA used for investigative purposes can be found in blood‚ saliva‚ perspiration‚ sexual fluid‚ skin tissue‚ bone marrow‚ dental
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An example of modern forensics evidence is the use of DNA fingerprints. Sources of DNA include blood‚ hair‚ semen‚ saliva‚ bone and tissue. Each person has a unique DNA fingerprint. A DNA fingerprint is the same for every cell‚ tissue‚ and organ of a person. It cannot be altered by any known treatment. Consequently‚ DNA fingerprinting is rapidly becoming the primary method for identifying and distinguishing among individual human beings . An additional application of DNA fingerprint technology is the diagnosis of inherited disorders in adults
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Discovery of dns Discovery of DNA By: Leslie A. Pray‚ Ph.D. © 2008 Nature Education Citation: Pray‚ L. (2008) Discovery of DNA structure and function: Watson and Crick. Nature Education 1(1) In the attached article‚ Leslie Pray discusses how the discovery of DNA came about and what it took to develop and finally formulate the different forms of what we now call DNA. DNA wasn’t just discovered by 1 or 2 scientists but rather a group of scientist over many different years. She starts off by
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Associate Program Material DNA Worksheet Answer the following in at least 100 words: 1. Describe the structure of DNA. DNA is typically has two strands running in opposite direction and is usually referred to as a double helix. Each on the individual strands consists of a backbone that is formed by sugar molecules linked together in groups. Each individual sugar molecule is covalently linked to one of the following possible bases: Adenine‚ Guanine‚ Cytosine and Thymine. These bases
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