Dna science technology essay

Usually, the vector is a plasmid. Some will take up the plasmids if they are in calcium chloride solution. A cell that produces the protein is selected, for example the beta cells from the islets of Langerhans in the human pancreas. Disgust is a powerful human emotion that is signalled by the presence of certain olfactory The bacteria are transferred to a plate containing the antibiotic ampicillin.

Cut the genome with restriction endonuclease and mix with the plasmid that has also been cut with the same enzyme so that the sticky ends of the fragments and the plasmid are complementary. However, the other gene for antibiotic resistance will still be intact.

One is the plasmid rejoins, or the fragment joins with plasmid but the fragment does not contain the desired gene. Alternatively the fragment joins with plasmid, however this time the fragment does contain the desired gene or finally it is unsuccessful and the fragment joins with itself.

Hopefully, some fragments will insert into the plasmid DNA before either segment joins with itself. Each type of restriction endonuclease cuts a double DNA strand at a specific sequence of bases, known as the recognition sequence.

Reverse transcriptase is the process of isolating a gene; the process will allow us to produce things such as insulin to help people suffering from diabetes. These bacteria will include recombinant and non-recombinant plasmids. The method can be used to create antibiotic resistance.

If you know that one of your parents has the The plasmids are modified so that they have two or more genes for resistance to antibiotics.

Using DNA in science and technology Essay Sample

You will determine your phenotype and try to determine your genotype for the traits listed below. The restriction endonuclease identifies the recognition sequence and cuts the DNA, however instead of cutting in a straight line the cut is staggered leaving bases unpaired.

Farmers use this technique to get the best quality cattle and produce from the animals they have. The farmer then has the most favourable genetic characteristics in his heard to breed from. Add this mixture of recombinant and non-recombinant plasmids to bacteria. It is found in many cell organelles, such as plasmids in bacteria, chloroplasts in plants, and mitochondria in both plants and animals.

Those bacteria that have taken up any plasmid will be resistant to the antibiotic so will survive and form colonies. The other method produces sticky ends; the staggered ends leave parts of the DNA unpaired and therefore available to form new bonds.

This process is known as DNA hybridisation, it is used to determine species and how closely related they are. DNA has a double helix structure, its sugar phosphate backbone, made up of deoxyribose and a phosphate group are held together by hydrogen bonds and base pairs.

Remember, if you have a dominant trait, you may be homozygous or heterozygous fro that trait. They should also contain a sequence that can be recognized by the same restriction enzyme used to cut the fragments. The nucleotides on the end are complimentary to the ones on the other side because they used to pair.

When this occurs between two opposite base pairs it leaves blunt ends. Science has also made reproduction for women suffering from infertility and birth complications possible by These colonies are then replicated onto plates containing the antibiotic tetracycline.

In the F1 generation he will do the same again, selecting the best cows from the generation, the F2 generation will have the most favourable characteristics and will have lost any of the unfavourable characteristics as they have been bread out of the stock.

Scientists can produce this to make injections to give to sufferers of diabetes. One process produces blunt ends and other produces sticky ends. The site that is cut should be in one of the genes for antibiotic resistance. Allele frequency is reduced and this leaves the heard vulnerable to contracting infections and diseases, they have lost their ability to adapt and produce immune reactions.

Genetic engineering is very important in allowing us to develop medical cures as well as for other uses, such as food production. Science and technology is used for genetic diversity, selective breeding is used especially in farming for livestock.

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This is important as it allows us to determine how closely related species are and thus if they will be able to breed and have viable off spring. The mixture is cooled to allow the complementary bases to form hydrogen bonds.

DNA helps us to perform many actions in solving crimes, and also helps us to do scientific studies that were not possible until recently. Is there an increase in the perception and rating of disgust in females rather than males? This double strand is the required gene, in this case human insulin.Disclaimer: This essay has been submitted by a student.

This is not an example of the work written by our professional essay writers. DNA profiling has changed forensic science. DNA technology has given police and the courts a means of identifying the suspects of rapes and murders.

Using DNA in Science and Technology

Thousands of cases have been closed and innocent suspects. Get involved and help out other community members on the TSR forums: Uses of DNA in science and Technology essay.

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Using DNA in science and technology Essay Sample. A cycle is a biological pathway or process in which the end product of one cycle becomes the starting point for the next cycle.

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