1 The glow-in-the-dark trait gene: a. Comes from a firefly b. Comes from E coli
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1 The glow-in-the-dark trait gene: a. Comes from a firefly b. Comes from E coli c. Could be used in anti-HIV drug development d. A and C 2 Antifreeze plasma proteins a. Have been isolated in species of flounder b Allow sone species of fish to grow at very hot temperatures c Allow some species of fish to grow at very cold temperatures d A and C e All of the above 3. Insulin a Can be produced in genetically engineered bacteria b Can be produced in cloned cown c. Can be produced more cheaply in cow's milk d B and C e All of the above 4. The rot-resistant trait a. Was introduced into the Elaxx SavI tomato b. Is due to antisense suppression of polxgalacturonase c. Increased the cost of processed tomato products such as tomato paste d. A and B 5. Genes have NOT been successfully introduced "'spliced") into. a. Prokaryotes b. Plants c. Animals d. None of the above 6 Restriction enzymes a. Were originally isolated from bacteria b. Only cut DNA at random sequences c. Can cut DNA at specific sequences d. Always leave blunt ends e. A and C 7. A proper Watson-Crick DNA base pair is a A-G b.C-T c. A-T d. None of the above Page 3 ofs 820 wordsRecovere 9-26 AM 2/27/201Explanation / Answer
1. Both a and c option are correct. The glow in the dark trait gene comes from a fire flie and can be use in anti HIV drug development.
2. C. Anti freeze plasma protien allow some fishes to grow at very cold temprature. These protiens bind to ice crystals in the blood to prevent the fish from freezing.
3. E. Insulin can be produced by genetically engineered bacteria and angentine scientist said that they had created four cloned and genetically modified calves capable of producing human insulin in there milk .
4. D . The rot resistant gene was introduced into flavr savr tomato and that was due to intisense gene which interfere with the production of the enzyme polygalacturonase. The enzyme normally degrades pectin in the cell wall and result int the softening of fruit which makes them more susceptible to being damaged by fungal infections.
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