Exam 19: Dna Technology

A person is heterozygous for a locus on Chromosome 1. The first copy of Chromosome 1 has the sequence 5′-AACTACGA-3′; the second copy has the sequence 5′-AACTTCGA-3′. Which of the following statements correctly describes theses sequences?

A paleontologist has recovered a bit of tissue from the 400-year-old preserved skin of an extinct dodo (a bird). To compare a specific region of the DNA from a sample with DNA from living birds, which of the following would be most useful for increasing the amount of dodo DNA available for testing?

Being able to amplify specific DNA fragments is critical our ability to study genes because ________.

Which of the following best explains the inability of bacteria to correctly express the protein products of plasmid containing an unmodified mammalian gene?

Which of the following characteristics of Taq polymerase make it useful in the PCR process?

Which of the following statements best explain why retroviral vectors for gene therapy may increase the patient's risk of developing cancer?

Which of the following characteristics best support using yeast cells instead of bacterial cells to express mammalian proteins via cloning?

Which of the following enzymes is required to make complementary DNA (cDNA)from RNA?

The cloning of Dolly the sheep is an example of which of the following processes?

When attempting to introduce a particular fragment of DNA into the genome of an animal cell which of the following methods would be most successful?

Which of the following is true of cDNA produced using human brain tissue as the starting material?

If a researcher is examining cells from a breast tumor biopsy which of the following microarray assay (DNA chip) outcomes would best support a diagnosis that the tumor is cancerous?

Plants are more readily manipulated by genetic engineering than are animals because ________.

Use the figure to answer the following question. The segment of DNA shown in the figure has restriction sites I and II, which create restriction fragments A, B, and C. Which of the gels produced by electrophoresis best represents the separation and identity of these fragments?

Which of the following processes uses labeled probes to visualize the expression of genes in whole tissues and organisms?

The first cloned cat, called Carbon Copy, was a calico, but she looked significantly different from her female parent. Which of the following best explains the reason for the differences?