Please answer these accurately. Thank You! 19. The Genetic Code is said to be Re
ID: 273367 • Letter: P
Question
Please answer these accurately. Thank You!
19. The Genetic Code is said to be Redundant because a) More than one codon can code for the same amino acid A single codon can specify more than one amino acid c) A codon consists of three nucleotide bases-but only two are required d) All the above e) None of the above 20. Which of the following statements about the Genetic Code is NOT true? a) Genetic information is encoded in the sequence of nucleotide bases. b) The genetic code is a triplet code c) Multiple codons may encode the same amino acid d) Certain codons do not code for an amino acid, but instead mean "Stop." e) None (All of the above statements are true) 21. Which of the following is not useful in producing recombinant DNA? a) Restriction enzymes, b) DNA ligase c) RNA polymerase d) PlasmidV e) None (They are all used to make recombinant DNA) True or False Fill in (a) for True and (b) for False] 22. The primary structure of a protein is directed by the genetic sequence encoding that protein 23. Restriction endonucleases are enzymes that cut DNA at specific double-stranded sequences. 24. In PCR, heat is used to denature (separate) DNA strands T 25. Toq polymerase is used in PCR because it is stable at high temperatures.T 26. A bacteriophage, a kind of virus that infects bacteria, can be used as a cloning vector.T 27. DNA ligase is an enzyme that generates "sticky ends. 28. Enzymes work by increasing activation energy (the energy required to start a chemical reaction). 29. Eukaryotic genes can be expressed in bacteria using an appropriate promote 30. Human insulin is an example of a product produced by molecular cloning. T 31. Selective breeding leading to the domestication of animals is an example of ancient bioengineering - 32. Biotechnology began with the discovery of the double helical structure of DNA. Multiple Choice 33. A transgenic animal a) is a reproductive clone c) d) e) contains one or more genes from another species is produced by selective breeding is produced by Somatic Cell Nuclear Transfer None of the above 34. Gene therapy is best described as a) Replacement of a missing gene product (protein) b) Replacement of a defective gene c) IExplanation / Answer
19)Option A
The genetic code is redundant, because a single amino acid may be coded for by more than one codon.
20) E All are correct statements
21) RNA polymerase is not useful in recombinant DNA
23) True
24) True
25) True
26) True
27) FALSE
29) True
30)True
33) Answer is B
Transgenic animals are made by introducing genes from one species into the genome of another animal.
The first transgenic animal was a ‘Mouse’, but now or some year later it is followed by Rabbit, Pigs, Sheep, Cattle.
34) Answer is A
Gene therapy is the introduction of normal genes into cells in place of missing or defective ones in order to correct genetic disorders.