Using dna in science and technology

Using dna in science and technology

DNA is used in genetics to study genes, the genetic variations, and passing of certain traits from parents to their off springs.

Interpreting a DNA typing analysis requires a valid scientific method for estimating the probability that a random person by chance matches the forensic sample at the sites of DNA variation examined.

using dna in science and technology sample essay

The FBI's method has become the one most widely used in public forensic-science laboratories. In case of a victim who is not recognized as result of accidents or burns, DNA has helped these victims to be identified.

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With DNA information, queries might be directed at obtaining numerical estimates of values or at deducing the state of an attribute of an individual through a series of Boolean yes-no queries to multiple distributed databanks. DNA is very important in modern life because it is used in many fields such as science and technology. DNA technology has been applied in insulin manufacturing for people with diabetes. Reference Terms from Wikipedia, the free encyclopedia DNA Deoxyribonucleic acid DNA is a nucleic acid that contains the genetic instructions for the development and function of living things. Potential artifacts should be identified by empirical testing, and scientific controls should be designed to serve as internal checks to test for the occurrence of artifacts. It is argued to be one of the most essential discoveries ever made in the 20th century. Rimoin, David L. Before a new DNA typing procedure can be used, it must have not only a solid scientific foundation, but also a solid base of experience. Just the existence in a databank of a sample from a person, independent of any DNA-related information, may be prejudicial to the person. Words: , Paragraphs: 6, Pages: 2 Publication date: December 07, Sorry, but copying text is forbidden on this website! DNA has helped to solve crime and determine the guilt and innocence of suspects through forensics. Preservation of population DNA samples in the form of immortalized cell lines will ensure that DNA is available for determining population frequencies of any DNA pattern as new and better techniques become available, without the necessity of collecting fresh samples. However, that situation is substantially different.

Recommendations In the future, if pilot studies confirm its value, a national DNA profile databank should be created that contains information on felons convicted of particular violent crimes. Recommendations As a basis for the interpretation of the statistical significance of DNA typing results, the committee recommends that blood samples be obtained from randomly selected persons in each of relatively homogeneous populations; that the DNA in lymphocytes from these blood samples be used to determine the frequencies of alleles currently tested in forensic applications; and that the lymphocytes be ''immortalized" and preserved as a reference standard for determination of allele frequencies in tests applied in different laboratories or developed in the future.

Each DNA typing procedure requires objective and quantitative rules for identifying the pattern of a sample.

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All known cellular life and some viruses contain DNA. This is done so that the plant will produce the gene product; no matter if it is an insecticide, vaccine, or other plant material.

Genes can be produced from plants or other organisms in order to give them certain characteristics such as, giving produce a longer shelf life, increasing the flavor of the foods and even the nutritional content, and creating edible vaccines in order to prevent widespread diseases in other developing countries.

The importance of dna in science and technology essay

It is appropriate to prefer somewhat conservative numbers for forensic DNA typing, especially because the statistical power lost in this way can often be recovered through typing of additional loci, where required. When there is no correlation between the two parental alleles, the locus is said to be in Hardy-Weinberg equilibrium. Nevertheless, even with today's technology, which uses loci, a match between two DNA patterns can be considered strong evidence that the two samples came from the same source. The calculation is fair to suspects, because the estimated probabilities are likely to be conservative in their incriminating power. A standard way to estimate frequency is to count occurrences in a random sample of the appropriate population and then use classical statistical formulas to place upper and lower confidence limits on the estimate. The key question underlying the use of the multiplication rule—i. Although mindful of those opposing views, the committee has chosen to assume for the sake of discussion that population substructure may exist and to provide a method for estimating population frequencies in a manner that would adequately account for it. Hence, the multiplication rule does not appear to lead to the risk of extrapolating beyond the available data for conventional markers. In both cases, the genotype frequency is calculated by multiplying the two allele frequencies, on the assumption that there is no statistical correlation between the allele inherited from one's father and the allele inherited from one's mother. Genetic fingerprinting can be used to test for paternity.

CRISPP enables scientists to improve on genomes much better than older ways of editing genomes and this method has helped in changing the germ line of animals, humans, and crops.

External mechanisms are needed, to ensure adherence to the practices of quality assurance. Recommendations Although standardization of forensic practice is difficult because of the nature of the samples, DNA typing is such a powerful and complex technology that some degree of standardization is necessary to ensure high standards.

Potential mechanisms include individual certification, laboratory accreditation, and state or federal regulation.

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DNA Science Technology Essay Example