Which of the following is not a suspected reason for the

Question : Which of the following is not a suspected reason for the : 2134227

16) Which of the following is not a suspected reason for the inefficiency/poor outcomes of reproductive cloning?

A. inefficient reprogramming

B. premature terminal differentiation in the developing embryo

C. telomere length

D. chromosome missegregation during early embryonic divisions

17) “Pharming” is

A. the growth of transgenic plants as food crops

B. the use of Agrobacterium tumefaciens to transform animal cells

C. the use of genetically modified organisms to produce pharmaceutical agents

D. the use of plants or algae to produce biofuels

18) What information did the study of crown gall disease provide that was critical for plant genetic engineering?

A. Understanding the role of plant hormones in growth promotion.

B. Knowledge of plant tumor-inducing genes.

C. Understanding the role of opine synthesis enzymes in tumor progression.

D. Discovery of a plasmid that introduces virulence genes into plants.

19) Plasmids are used as vectors in both plant and bacterial recombinant DNA technology. However, there is a major difference in the fate of genes introduced into bacteria on most bacterial plasmids and into plants on Ti plasmids. What is this difference?

A. In bacteria, genes are stably expressed; in plants, gene expression is quickly lost.

B. Gene expression tends to decrease rapidly and unpredictably in bacteria; gene expression is much more stable in plants.

C. Bacterial plasmids are circular DNAs; Ti plasmid DNA is linear.

D. Bacterial plasmids and the genes they carry usually are not integrated into the chromosome; Ti plasmids and the genes they carry are integrated into the chromosome.

20) Which is not a method by which one can introduce foreign DNA into a plant cell?

A. calcium chloride treatment followed by heat shock

B. infection with a specific bacterium

C. microballistic “gene gun”

D. electroporation

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Biology 1 Year Ago 167 Views
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