... this difference will also be translated in an overall trend that males will have greater foot lengths and hand spans. In order to take into account of this variable, equal numbers of males and females were sampled. The results of this investigation have been analysed with males and females together and each gender independently so that any differences across the sexes ... a better representation of the population and reduce the extent of any anomalies when averages are taken. Each individual was selected by random sampling. This involved numbering people and using a random number genera...

• Word Count: 3540
• Approx Pages: 14
• Grade Level: High School

... residue is left behind on hands, clothes, and other surroundings. These residues can be compared to other residues. Many times when a firearm is used a criminal will destroy the firearm serial numbers. To restore serial numbers, scientists use acid to dissolve the distorted metal crystals. The distorted metal crystals liquefy at a quicker pace than non distorted metal crystals leaving the serial ... number visible. There are other tests that can be done. Dental impressions can be used to identify an unidentified victim. Bite marks on a victim can be DARDAR 3 compared to a suspect. DNA "...

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• Grade Level: High School

... manner, then the death penalty would also serve as a deterrent. Thus, it would decrease the number of first-time capital offenders, decrease the number of repeat capital crime offenders, and increase the number of lives that are saved due to the major threats of our society being removed and used as ... illustrate no tolerance to murderers. In January of 1976 there were 55 murders committed in Utah. In the preceding year after a murderer had been executed that number dropped to 44 murders the following year, a 20 percent decrease. A decade later we see that the count from January through...

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... are all monosaccharides termed "simple sugars". Each has the chemical formula C6H12O6, but the arrangement of atoms and chemical groups in them is different. Monosaccharides are classified according to the number of carbon atoms they possess. Monosaccharides that have 3 carbons are termed trioses. E.g. glyceraldehyde and dihydroxyacetone, (used in respiration). Monosaccharides with 5 carbon atoms are called pentoses. E.g. ribose ... called a pyranose ring. When 2 monosaccharides are joined by means of a condensation reaction they form a disaccharide. (See diagram below) Polysaccharides ...

• Word Count: 1520
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• Grade Level: High School

... In the initial stage of HIV infection, the virus colonizes helper T cells, specifically CD4+ cells, and macrophages, while replicating itself relatively unnoticed. As the amount of the virus soars, the number of helper cells falls; macrophages die as well. The infected T cells perish as thousands of new viral particles erupt from the cell membrane. Soon, though, cytotoxic T and B lymphocytes kill ... viruses known. HIV's high replication rate further increases the odds that a mutation useful to the virus will arise. To fully appreciate the extent of HIV multiplication, look at the numbe...

• Word Count: 2172
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• Grade Level: High School

... as different from each other as one might assume. There are about seven different types as shown below: But in every type of print there are lots of differences; the number of lines, their shape or their size makes every figure different. Any type of organism can be identified by examination of DNA sequences unique to that species. Identifying individuals within ... your suspect really is the right person. With DNA, the same kind of thinking is used; you can look for matches (based on sequence or on numbers of small repeating units of DNA sequence) at a number of different locations on ...

• Word Count: 1890
• Approx Pages: 8
• Grade Level: Undergraduate

... another nucleotide. The two-polynucleotide chains of each DNA molecule are joined by pairs of bases held together by hydrogen bonds. These bonds are individually quite weak but in large numbers very strong. This helps to make DNA a very stable molecule which is an essential feature for a molecule, which carries and transfers vital information. The fact that the polypeptides are joined ... time if it started at one end and proceeded nucleotide by nucleotide along the entire length of the molecule, so instead the double helix opens up and replicates simultaneously at a number of different...

• Word Count: 1977
• Approx Pages: 8
• Grade Level: Undergraduate

... of the chemicals in the body provides information about the mode of exposure(ingestion, injection, inhalation, and s on) and the time of exposure relative to death. The forensic toxicologist has a number of isolation techniques (steam distillation, selective solvent extraction, microdiffusion), depending on the tissue and the analyte, which allow for the recove ury of drugs and chemicals from biological samples. Once ... of forensic medicine at the University of Lyons, France, was the first to try to individualize bullets to a gun barrel. His comparisons at the time were based simply on...

• Word Count: 4661
• Approx Pages: 19
• Grade Level: Undergraduate

... of the variants that can only be separated by genotyping after the mutant genes had taken into affect. Some disorders display errors in DNA replication, where there is an increased number of trinucleotide repeats or by a cellular loss of function. The abnormalities are caused by malformation in transport, degradation and aggregation of proteins that lead to cell specific changes and neuron ... repeat of 40. The gene encodes the protein Huntingtin, which is found in many cells in neural and non neural tissues. The brains of humans with Huntington's disease with increased numbers of CAG r...

• Word Count: 1045
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• Grade Level: Undergraduate

... be developed. Computers have made the techniques used to match fingerprints very easy. Until recently, the old way was the Henry Classification System. This was a big sequence of letters and numbers broken down into several levels of classification. It could take weeks or months to compare a suspect fingerprint to a department's print files. Prints can be scanned directly into a computer, doing away ... the droplet. Cast off stains are a result of hitting. Pulling back from a blow produces a blood spatter that indicates direction, by creating an arc of blood droplets. You can determine ...

• Word Count: 2730
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• Grade Level: High School

... to me because it just doesn't make sense. I tried for hours to find the last knot, but I was unsuccessful. After getting use to doing the math work on paper, I made a "number" tree of a knot with seven crossings. Sure enough, I found 128 knots, which is 64 doubled. Again, I went back and tried to find the 64th knot, but still could not. I think ... last picks and I didn't know what "family tree of knots" really meant. Once I got into it though, I actually liked it because it was a challenge. I got to do actual math with numbers on paper, which is why I like math in the first place. I fe...

• Word Count: 864
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... more about the crime scene than other surrounding investigators. Upon arriving to the crime lab I submit a letter of transmittal which includes the following information: my agency, location and telephone number, case identification numbers and associated evidence submissions including all communications relating to them, a description of the nature of offense and basic facts relating to it, names and descriptive data about the individuals ... ...

• Word Count: 1650
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• Grade Level: Undergraduate

... be a great asset by itself. It could help in the aid of producing limited drugs. The drugs that can be produced by this method can be be reproduced in high numbers and distrubeted.Certain human proteins, such as insulin, are sometimes needed on demand. Unfortunately, our human bodies can not produce them on the spot. This can be very dangerous for ... has to live with the diease for the reat of their life. Lastly, genetic engineering has its agricultural benefits as well. By using genetic engineering to produce food, an unlimited number of food can be created. Its possible these days to...

• Word Count: 776
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• Grade Level: High School

Critical Thinking For assignment number two, we were to read the article titled, "Should consumers be concerned about bio-engineered crops?" This article contains two major claims. The claim we are focused on is by ... amount of evidence for compared to the evidence against was overwhelmingly greatly. I was convinced that the chemicals in this corn are harming humans who consume them. The article provided exact numbers of people who have suffered because of StarLink. It also provided good evidence that the only type of Cry9C tested was the unglycosylated bacteria and not the type that is ......

• Word Count: 432
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• Grade Level: Undergraduate

Persuasive Essay Compare a firm, plump, juicy tomato to one that is soft and bruised. Which one would is more appealing? The first choice is most likely the number one choice; it is a Genetically Modified food. Genetically modified foods are where scientists take the good qualities of one organism, and place that gene into another organism. For instance the ... anywhere. This will provide more people with the vitamins needed. You wouldn't see as many frail people due to the lack of nutrients. As a result of using this rice, the numbers of blind people, and even death could decrease. Vegetabl...

• Word Count: 480
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• Grade Level: High School

... became far too advanced to continue its existence as a wasteful, and inefficient society on planet earth. Terra could hardly handle a population of ten million efficiently, but was overflowing with the number of its inhabitants reaching over ten billion. The evolution of men to date was based consistently on wars - a sharper blade for the sword, or a jet engine, both served to further ... the new international space station. Many realized that something had to be done, but the only real solution was a devastating war to shrink the population of the world to manageable numbers, but it wa...

• Word Count: 496
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• Grade Level: Undergraduate

... attack victims etc, could one day be a reality, albeit within an unknown timeframe. Although this new medical technology provides us the opportunity to do some amazing things and save countless numbers of people whom never before could be saved. It also presents us with some grave economical, moral and religious dilemmas, and therefore the research into this procedure is not currently ... is no way around the fact that at least one human egg would be required for each patient. (In reality more than one egg is needed per patient) Considering the number of patients in the world that could...

• Word Count: 2187
• Approx Pages: 9
• Grade Level: Undergraduate

... various functions. There are two types of ciliate nuclei, but only the micronuclei divide by mitosis. The macronuclei, which develop from micronuclei, divide by elongating and constricting; they contain large numbers of copies of only a few genes and are required for growth and reproduction. Most ciliates reproduce by transverse binary fission, but some stalked and sessile ciliates "asexually bud off 'larval ... " behavior, in which several cells are enclosed inside one another; offspring cells are produced inside parent cells. Paramyxans depend on various invertebrates. Genera in this p...

• Word Count: 3806
• Approx Pages: 15
• Grade Level: Undergraduate

... proteases are used to degrade fibrin; use of proteases can prevent the formation of dangerous blood clots. PCR (polymerase chain reaction) is a "test tube" production line for churning out large numbers of identical copies of a molecule of double stranded DNA. Each strand is copied, and then copied, and so on until enough DNA has been made for analysis. PCR is sensitive ... copy as little as one molecule of DNA; therefore it can be used to detect the presence of bacteria and viruses (via their genes) before they are present in sufficient numbers to produce symptoms. This is useful for t...

• Word Count: 1120
• Approx Pages: 4
• Grade Level: Undergraduate

... destroying the DNA-files. And this will probably be the solution, if it gets in the wrong hands. A DNA profile is a string of numbers stored on a computer. In theory it contains no more information about a person, than the numbers on a driving licence. But it contains of course your generics secrets, so it is of course valuable. It says in the text, that ... ...

• Word Count: 667
• Approx Pages: 3
• Grade Level: High School

... electron. It is negatively charged and it's mass is about 2000 times smaller than that of a neutron or electron. Usually the number or electron in an atom is the same as the number of protons. So, usually the atoms have not a positive nor negative charge, but they are neutral. Electron are not in the ... referred to as tritium. Tritium has on proton and two neutrons in the nucleus of the atom. Even though the atomic mass number may change the atomic number of hydrogen will be 1, and it will still have one proton and one electron. An isotope is an atom with the same ... Chemical bonding i...

• Word Count: 4152
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• Grade Level: High School

... quality of my DNA was 1.76. Mohammed obtained a similar value for his sample (1.79). The DNA concentration for the crude prep is usually not more 1 mg/ml (micro), and any numbers greater than that usually indicates contamination. In our case, the DNA quality reading is expected to be greater than 1 because we have RNA in our samples, which also absorbs at ... ...

• Word Count: 811
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... , having a better condition for survival. This hypothesis was not enough, and more experiments had to be made. A British ecologist, called Kettlewell, prepared another test for this hypothesis. He placed equal numbers of light and dark colored moths in two types of areas. In one area, trees were normally colored. In the other area, they were blackened by soot. Later on, he ... ...

• Word Count: 1784
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• Grade Level: High School

... our society alone, but they do affiliate themselves to at least a part in one of our existing laws. As far as funding goes, the project is so costly that the numbers are outrageous. The project requires doing research on 100% of the DNA or genes and only 5% is actually used. That means 95% of the research and money goes to waste ... ...

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... may not be guilty. Not surprisingly, "The National Institute of Justice recently published a report of the first 28 cases in which convicted felons were exonerated by DNA evidence after varying numbers of years in prison. Remarkably, all of these cases contained one or more false eyewitness identifications (Connors, Lundregan, Miller, & McEwan, 1996). - This report suggests that it is time that researchers ... ...

• Word Count: 933
• Approx Pages: 4
• Grade Level: Undergraduate