Biology Study Set 13
Quiz 16 :
Studying and Manipulating Genomes
Genetically engineered food has become an integral part of our society that saturates in our diet. One of the major benefits of GM food is that it is used as an alternative for easing the world hunger. Their safety is been ensured by the government agencies and FDA. So, I would prefer picking these genetically modified or engineered tomatoes because they are not only presentable but are also carrying high nutritive value in them. Mostly people are unaware about these kinds of foods and carry negative thoughts about it. But I would prefer purchasing and consuming such food, which is coping well inside the human body.
DNA polymerases are the replicating enzymes found in both prokaryotes and eukaryotes, for the process of replication. These enzymes catalyze the formation of a polymer and bring about the synthesis of polynucleotide chain. On the other hand, reverse transcriptase is a kind of RNA dependent DNA polymerase enzyme involved in the process of reverse transcription, which is used for the formation of DNA from RNA. Therefore, the option (a) and (d) both are incorrect. DNA probes are the group of molecules which function as searching tools for genes. Thus, the option (b) is also incorrect. Restriction enzymes are the one responsible for producing cleavage cuts in DNA molecules at specific site. These enzymes can also be termed as restriction endonucleases or molecular scissors. Hence, the correct option is c. restriction enzymes.
Nowadays, there are lot of controversies and debates going on the subject of genetically modified food or GMO. Now it's becoming a global issue so it is important to get cleared up with agriculture and society regarding this topic in order to ensure them about their positive and negative aspects. As per the survey, for the use of GM food, the low uncertainty is shown mainly in Scandinavia and South America while high uncertainty shown in North America and south Europe. There are pros as well as cons of genetically modified food, which are as follows, Pro's of GM food • It acts as one alternative for easing the world hunger. • Reduced strain on non-renewable resources (develop drought resistant, salt tolerant). • Prevent spoilage. • Strengthening the resistance against herbicides/pesticides and diseases. • Provide better quality, flavor and texture. • Improve its yield and nutritional quality of food. • Coping better with climatic conditions Con's of GM food • Reduce economic value. • Increased price. • Lead to allergic/toxic reactions and also harm animal. • Environmental damage • Loss of biodiversity When it comes to talk about the alternatives for this subject, GM plants and GM fish have a sustainable contribution to make in some environment just as ecological agriculture which might act as a superior approach to achieve a higher sustainable level of agricultural productivity. In Bihar 2013, it was reported about the farmers growing world record amount of rice without involved GM technique, herbicides and other chemicals additives. This could actually act as one of the alternative or solution to uplift the world food shortage. Other common alternatives adopted are greener farming, sustainable farming, sustainable agriculture, crop rotation etc. Ultimately, as far as I'm concerned this technology of genetic modification is still a premature technique and in the development process. Only time will reveal their ultimate effect on human. Even if the technology is proven to be safe in future, worries over multinational control would remain realistic and need to be addressed.