Lab Report on "Extracting DNA From Strawberries in My Experiment"

Lab Report 4 pages (1113 words) Sources: 2 Style: MLA

[EXCERPT] . . . .

Extracting DNA from strawberries

In my experiment, I attempted to extract the DNA from strawberries; in order to fulfill my purpose, I have followed the stages presented in the example: I blended the strawberries together with salt and cold water, I put the mixture through a strainer into a cup, then I added liquid detergent and then I moved the liquid into a glass container, after that I added pineapple juice, I stirred and in the end I poured ethyl alcohol. In the end I was able to see the DNA raising to the surface of the container. It looked like a small White Sea jelly.

"Deoxyribonucleic acid (DNA) is a nucleic acid that contains the genetic instructions for the development and function of living organisms. All living things contain DNA, with the exception of some viruses with RNA genomes. The main role of DNA in the cell is the long-term storage of information. It is often compared to a blueprint, since it contains the instructions to construct other components of the cell, such as proteins and RNA molecules. The DNA segments that carry genetic information are called genes."

History: DNA was first discovered Friedrich Miescher, an Austrian monk, who found out in 1869 that human traits are determined by some minimal factors, which he called "nuclein." In 1937, William Astbury was the one who produced the first X-ray diffraction patterns that proved that DNA had a regular structure. "In 1943, Oswald Theodore Avery discovered that traits of the "smooth" form of the Pneumococcus could be transferred to the "rough" form of the same bacteria by mixing killed "smooth" bacteria with the live "rough" form. Avery identified DNA as this transforming principl
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e DNA's role in heredity was confirmed in 1953, when Alfred Hershey and Martha Chase in the Hershey-Chase experiment, showed that DNA is the genetic material of the T2 phage."

However, the first adequate DNA model was produced in 1953 by James D. Watson and Francis Crick, the Watson winning the Nobel Prize 9 years later for his discovery..

Importance:

nowadays, we highly benefit from these previous discoveries, since the role of the DNA is of valuable importance, since it contains genetic information that lead to living, growing and reproducing of the living organisms. These processes are made possible by the sub-divisions of the DNA, called genes.

DNA is also used in the forensic identification:

it helps finding potential suspects by the evidences from the crime place which contain DNA; reduces the possibility of a wrong crime accusation; identifies the victims of a crime, establishes family relationships, especially paternity.

3. Materials and Methods: Since I have read in the example given that I could extract DNA from anything living, and among the stipulated examples were the strawberries, I decided to use these fruits as material for my experiment. Therefore, I have chosen four medium-sized strawberries and I put them in the blender from my kitchen (I guided myself with the help of the example given for choosing this measurement, trying to approximate the quantity used there). I also added approximately 1 ml table salt and 200 ml cold water. I pushed the blender's "high" button and I blended it for 15 seconds. The result was looking similar to a smoothie, and I was able to see the strawberries' small cores, so I thought that I… READ MORE

Quoted Instructions for "Extracting DNA From Strawberries in My Experiment" Assignment:

*****¢ Read and review the information found at: http://gslc.genetics.utah.edu/units/activities/extraction/

*****¢ Follow the directions found on the Web site and perform the experiment.

*****¢ Write a lab report (IN YOUR OWN WORDS) to contain the following:

o Title *****“ a specific and accurate representation of the report*****s results

o Abstract *****“ a brief and concise summary of the research; a single paragraph that gives the experiment*****s objectives, experimental design, results and conclusions

o Introduction *****“ background information, questions answered and/or the hypothesis; this should be several paragraphs in length. Some things you can include are:

 The background of DNA, how it was discovered

 The role of DNA in the body

 The importance of DNA in genetic testing, criminal cases, etc.

 Think of this section as a mini report

o Materials and Methods *****“ this should include all information necessary to repeat the experiment; it must be narrative in style

o Results *****“ this should include the data and observations in narrative form and can be accompanied by tables, figures, graphs, etc.

o Discussion *****“ an interpretation of results, did you get what you expected to get, why or why not, what would you differently the next time, etc.

*****¢ Please label each section.

*****¢ Be sure to use proper MLA citation

How to Reference "Extracting DNA From Strawberries in My Experiment" Lab Report in a Bibliography

Extracting DNA From Strawberries in My Experiment.” A1-TermPaper.com, 2007, https://www.a1-termpaper.com/topics/essay/extracting-dna-strawberries/348451. Accessed 29 Jun 2024.

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